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Finding the Fourth Proportional to 127,631.34, 176,129.51 and 71,042.76

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Solution

The fourth proportional to 127,631.34, 176,129.51 and 71,042.76 is: 98,038.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,631.34 : 176,129.51 = 71,042.76 : x
  2. Step 2: Convert to fraction form
    127,631.34/176,129.51 = 71,042.76/x
  3. Step 3: Cross multiply
    127,631.34x = 176,129.51 × 71,042.76
  4. Step 4: Simplify right side
    127,631.34x = 12,512,726,152.63
  5. Step 5: Solve for x
    x = 12,512,726,152.63/127,631.34
  6. Step 6: Final answer
    x = 98,038.04

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.