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Finding the Fourth Proportional to 156,429.87, 215,871.92 and 88,460.19

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Solution

The fourth proportional to 156,429.87, 215,871.92 and 88,460.19 is: 122,074.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,429.87 : 215,871.92 = 88,460.19 : x
  2. Step 2: Convert to fraction form
    156,429.87/215,871.92 = 88,460.19/x
  3. Step 3: Cross multiply
    156,429.87x = 215,871.92 × 88,460.19
  4. Step 4: Simplify right side
    156,429.87x = 19,096,070,948.29
  5. Step 5: Solve for x
    x = 19,096,070,948.29/156,429.87
  6. Step 6: Final answer
    x = 122,074.33

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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.