Home / 156,505.32-234,357.26-86,306.76

Finding the Fourth Proportional to 156,505.32, 234,357.26 and 86,306.76

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Solution

The fourth proportional to 156,505.32, 234,357.26 and 86,306.76 is: 129,239.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,505.32 : 234,357.26 = 86,306.76 : x
  2. Step 2: Convert to fraction form
    156,505.32/234,357.26 = 86,306.76/x
  3. Step 3: Cross multiply
    156,505.32x = 234,357.26 × 86,306.76
  4. Step 4: Simplify right side
    156,505.32x = 20,226,615,793.08
  5. Step 5: Solve for x
    x = 20,226,615,793.08/156,505.32
  6. Step 6: Final answer
    x = 129,239.16

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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.