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Finding the Fourth Proportional to 138,130.79, 207,294.53 and 63,204.17

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Solution

The fourth proportional to 138,130.79, 207,294.53 and 63,204.17 is: 94,851.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,130.79 : 207,294.53 = 63,204.17 : x
  2. Step 2: Convert to fraction form
    138,130.79/207,294.53 = 63,204.17/x
  3. Step 3: Cross multiply
    138,130.79x = 207,294.53 × 63,204.17
  4. Step 4: Simplify right side
    138,130.79x = 13,101,877,361.70
  5. Step 5: Solve for x
    x = 13,101,877,361.70/138,130.79
  6. Step 6: Final answer
    x = 94,851.25

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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.