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Finding the Fourth Proportional to 127,355.52, 175,754.88 and 70,769.28

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Solution

The fourth proportional to 127,355.52, 175,754.88 and 70,769.28 is: 97,663.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,355.52 : 175,754.88 = 70,769.28 : x
  2. Step 2: Convert to fraction form
    127,355.52/175,754.88 = 70,769.28/x
  3. Step 3: Cross multiply
    127,355.52x = 175,754.88 × 70,769.28
  4. Step 4: Simplify right side
    127,355.52x = 12,438,046,314.09
  5. Step 5: Solve for x
    x = 12,438,046,314.09/127,355.52
  6. Step 6: Final answer
    x = 97,663.97

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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.