Home / 129,144.32-194,008.10-76,588.28

Finding the Fourth Proportional to 129,144.32, 194,008.10 and 76,588.28

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Solution

The fourth proportional to 129,144.32, 194,008.10 and 76,588.28 is: 115,055.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,144.32 : 194,008.10 = 76,588.28 : x
  2. Step 2: Convert to fraction form
    129,144.32/194,008.10 = 76,588.28/x
  3. Step 3: Cross multiply
    129,144.32x = 194,008.10 × 76,588.28
  4. Step 4: Simplify right side
    129,144.32x = 14,858,746,685.07
  5. Step 5: Solve for x
    x = 14,858,746,685.07/129,144.32
  6. Step 6: Final answer
    x = 115,055.36

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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.