Home / 132,171.92-182,337.72-78,459.20

Finding the Fourth Proportional to 132,171.92, 182,337.72 and 78,459.20

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Solution

The fourth proportional to 132,171.92, 182,337.72 and 78,459.20 is: 108,238.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,171.92 : 182,337.72 = 78,459.20 : x
  2. Step 2: Convert to fraction form
    132,171.92/182,337.72 = 78,459.20/x
  3. Step 3: Cross multiply
    132,171.92x = 182,337.72 × 78,459.20
  4. Step 4: Simplify right side
    132,171.92x = 14,306,071,641.02
  5. Step 5: Solve for x
    x = 14,306,071,641.02/132,171.92
  6. Step 6: Final answer
    x = 108,238.36

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1.5x scale

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.