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Finding the Fourth Proportional to 127,787.52, 176,347.50 and 74,104.40

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Solution

The fourth proportional to 127,787.52, 176,347.50 and 74,104.40 is: 102,264.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,787.52 : 176,347.50 = 74,104.40 : x
  2. Step 2: Convert to fraction form
    127,787.52/176,347.50 = 74,104.40/x
  3. Step 3: Cross multiply
    127,787.52x = 176,347.50 × 74,104.40
  4. Step 4: Simplify right side
    127,787.52x = 13,068,125,841.98
  5. Step 5: Solve for x
    x = 13,068,125,841.98/127,787.52
  6. Step 6: Final answer
    x = 102,264.49

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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.