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Finding the Fourth Proportional to 127,892.64, 191,839.14 and 39,146.52

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Solution

The fourth proportional to 127,892.64, 191,839.14 and 39,146.52 is: 58,719.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,892.64 : 191,839.14 = 39,146.52 : x
  2. Step 2: Convert to fraction form
    127,892.64/191,839.14 = 39,146.52/x
  3. Step 3: Cross multiply
    127,892.64x = 191,839.14 × 39,146.52
  4. Step 4: Simplify right side
    127,892.64x = 7,509,834,730.79
  5. Step 5: Solve for x
    x = 7,509,834,730.79/127,892.64
  6. Step 6: Final answer
    x = 58,719.84

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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.