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Finding the Fourth Proportional to 127,875.52, 176,468.16 and 71,290.56

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Solution

The fourth proportional to 127,875.52, 176,468.16 and 71,290.56 is: 98,380.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,875.52 : 176,468.16 = 71,290.56 : x
  2. Step 2: Convert to fraction form
    127,875.52/176,468.16 = 71,290.56/x
  3. Step 3: Cross multiply
    127,875.52x = 176,468.16 × 71,290.56
  4. Step 4: Simplify right side
    127,875.52x = 12,580,513,948.57
  5. Step 5: Solve for x
    x = 12,580,513,948.57/127,875.52
  6. Step 6: Final answer
    x = 98,380.94

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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.