Home / 156,425.08-215,810.04-102,739.20

Finding the Fourth Proportional to 156,425.08, 215,810.04 and 102,739.20

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Solution

The fourth proportional to 156,425.08, 215,810.04 and 102,739.20 is: 141,742.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,425.08 : 215,810.04 = 102,739.20 : x
  2. Step 2: Convert to fraction form
    156,425.08/215,810.04 = 102,739.20/x
  3. Step 3: Cross multiply
    156,425.08x = 215,810.04 × 102,739.20
  4. Step 4: Simplify right side
    156,425.08x = 22,172,150,861.57
  5. Step 5: Solve for x
    x = 22,172,150,861.57/156,425.08
  6. Step 6: Final answer
    x = 141,742.94

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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.