Home / 84,509.38-126,581.83-79,540.96

Finding the Fourth Proportional to 84,509.38, 126,581.83 and 79,540.96

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Solution

The fourth proportional to 84,509.38, 126,581.83 and 79,540.96 is: 119,139.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,509.38 : 126,581.83 = 79,540.96 : x
  2. Step 2: Convert to fraction form
    84,509.38/126,581.83 = 79,540.96/x
  3. Step 3: Cross multiply
    84,509.38x = 126,581.83 × 79,540.96
  4. Step 4: Simplify right side
    84,509.38x = 10,068,440,276.76
  5. Step 5: Solve for x
    x = 10,068,440,276.76/84,509.38
  6. Step 6: Final answer
    x = 119,139.91

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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.