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Finding the Fourth Proportional to 104,760.32, 156,957.12 and 71,372

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Solution

The fourth proportional to 104,760.32, 156,957.12 and 71,372 is: 106,933.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,760.32 : 156,957.12 = 71,372 : x
  2. Step 2: Convert to fraction form
    104,760.32/156,957.12 = 71,372/x
  3. Step 3: Cross multiply
    104,760.32x = 156,957.12 × 71,372
  4. Step 4: Simplify right side
    104,760.32x = 11,202,343,568.64
  5. Step 5: Solve for x
    x = 11,202,343,568.64/104,760.32
  6. Step 6: Final answer
    x = 106,933.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.