Home / 129,492,086.30-194,238,129.45-128,736,259.10

Finding the Fourth Proportional to 129,492,086.30, 194,238,129.45 and 128,736,259.10

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Solution

The fourth proportional to 129,492,086.30, 194,238,129.45 and 128,736,259.10 is: 193,104,388.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,492,086.30 : 194,238,129.45 = 128,736,259.10 : x
  2. Step 2: Convert to fraction form
    129,492,086.30/194,238,129.45 = 128,736,259.10/x
  3. Step 3: Cross multiply
    129,492,086.30x = 194,238,129.45 × 128,736,259.10
  4. Step 4: Simplify right side
    129,492,086.30x = 25,005,490,159,974,536
  5. Step 5: Solve for x
    x = 25,005,490,159,974,536/129,492,086.30
  6. Step 6: Final answer
    x = 193,104,388.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.