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Finding the Fourth Proportional to 127,954.92, 176,578.10 and 71,369.96

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Solution

The fourth proportional to 127,954.92, 176,578.10 and 71,369.96 is: 98,490.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,954.92 : 176,578.10 = 71,369.96 : x
  2. Step 2: Convert to fraction form
    127,954.92/176,578.10 = 71,369.96/x
  3. Step 3: Cross multiply
    127,954.92x = 176,578.10 × 71,369.96
  4. Step 4: Simplify right side
    127,954.92x = 12,602,371,933.88
  5. Step 5: Solve for x
    x = 12,602,371,933.88/127,954.92
  6. Step 6: Final answer
    x = 98,490.72

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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.