Home / 127,788.28-176,348.54-74,105.16

Finding the Fourth Proportional to 127,788.28, 176,348.54 and 74,105.16

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Solution

The fourth proportional to 127,788.28, 176,348.54 and 74,105.16 is: 102,265.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,788.28 : 176,348.54 = 74,105.16 : x
  2. Step 2: Convert to fraction form
    127,788.28/176,348.54 = 74,105.16/x
  3. Step 3: Cross multiply
    127,788.28x = 176,348.54 × 74,105.16
  4. Step 4: Simplify right side
    127,788.28x = 13,068,335,520.20
  5. Step 5: Solve for x
    x = 13,068,335,520.20/127,788.28
  6. Step 6: Final answer
    x = 102,265.53

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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.