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Finding the Fourth Proportional to 127,712.97, 191,569.49 and 52,750.72

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Solution

The fourth proportional to 127,712.97, 191,569.49 and 52,750.72 is: 79,126.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,712.97 : 191,569.49 = 52,750.72 : x
  2. Step 2: Convert to fraction form
    127,712.97/191,569.49 = 52,750.72/x
  3. Step 3: Cross multiply
    127,712.97x = 191,569.49 × 52,750.72
  4. Step 4: Simplify right side
    127,712.97x = 10,105,428,527.53
  5. Step 5: Solve for x
    x = 10,105,428,527.53/127,712.97
  6. Step 6: Final answer
    x = 79,126.09

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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.