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Finding the Fourth Proportional to 127,787.39, 176,347.31 and 74,104.28

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Solution

The fourth proportional to 127,787.39, 176,347.31 and 74,104.28 is: 102,264.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,787.39 : 176,347.31 = 74,104.28 : x
  2. Step 2: Convert to fraction form
    127,787.39/176,347.31 = 74,104.28/x
  3. Step 3: Cross multiply
    127,787.39x = 176,347.31 × 74,104.28
  4. Step 4: Simplify right side
    127,787.39x = 13,068,090,437.49
  5. Step 5: Solve for x
    x = 13,068,090,437.49/127,787.39
  6. Step 6: Final answer
    x = 102,264.32

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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.