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Finding the Fourth Proportional to 127,630.68, 176,133.24 and 71,045.88

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Solution

The fourth proportional to 127,630.68, 176,133.24 and 71,045.88 is: 98,044.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,630.68 : 176,133.24 = 71,045.88 : x
  2. Step 2: Convert to fraction form
    127,630.68/176,133.24 = 71,045.88/x
  3. Step 3: Cross multiply
    127,630.68x = 176,133.24 × 71,045.88
  4. Step 4: Simplify right side
    127,630.68x = 12,513,541,033.05
  5. Step 5: Solve for x
    x = 12,513,541,033.05/127,630.68
  6. Step 6: Final answer
    x = 98,044.93

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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.