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Finding the Fourth Proportional to 127,730.92, 176,266.92 and 71,142.70

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Solution

The fourth proportional to 127,730.92, 176,266.92 and 71,142.70 is: 98,175.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,730.92 : 176,266.92 = 71,142.70 : x
  2. Step 2: Convert to fraction form
    127,730.92/176,266.92 = 71,142.70/x
  3. Step 3: Cross multiply
    127,730.92x = 176,266.92 × 71,142.70
  4. Step 4: Simplify right side
    127,730.92x = 12,540,104,609.48
  5. Step 5: Solve for x
    x = 12,540,104,609.48/127,730.92
  6. Step 6: Final answer
    x = 98,175.95

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1.5x scale

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.