Home / 156,723.12-234,879.36-72,472.60

Finding the Fourth Proportional to 156,723.12, 234,879.36 and 72,472.60

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Solution

The fourth proportional to 156,723.12, 234,879.36 and 72,472.60 is: 108,613.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,723.12 : 234,879.36 = 72,472.60 : x
  2. Step 2: Convert to fraction form
    156,723.12/234,879.36 = 72,472.60/x
  3. Step 3: Cross multiply
    156,723.12x = 234,879.36 × 72,472.60
  4. Step 4: Simplify right side
    156,723.12x = 17,022,317,905.54
  5. Step 5: Solve for x
    x = 17,022,317,905.54/156,723.12
  6. Step 6: Final answer
    x = 108,613.96

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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.