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Finding the Fourth Proportional to 136,423.64, 188,239.64 and 75,992.78

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Solution

The fourth proportional to 136,423.64, 188,239.64 and 75,992.78 is: 104,856.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,423.64 : 188,239.64 = 75,992.78 : x
  2. Step 2: Convert to fraction form
    136,423.64/188,239.64 = 75,992.78/x
  3. Step 3: Cross multiply
    136,423.64x = 188,239.64 × 75,992.78
  4. Step 4: Simplify right side
    136,423.64x = 14,304,853,549.80
  5. Step 5: Solve for x
    x = 14,304,853,549.80/136,423.64
  6. Step 6: Final answer
    x = 104,856.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.