Home / 91,746.20-137,619.30-80,082.20

Finding the Fourth Proportional to 91,746.20, 137,619.30 and 80,082.20

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Solution

The fourth proportional to 91,746.20, 137,619.30 and 80,082.20 is: 120,123.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,746.20 : 137,619.30 = 80,082.20 : x
  2. Step 2: Convert to fraction form
    91,746.20/137,619.30 = 80,082.20/x
  3. Step 3: Cross multiply
    91,746.20x = 137,619.30 × 80,082.20
  4. Step 4: Simplify right side
    91,746.20x = 11,020,856,306.46
  5. Step 5: Solve for x
    x = 11,020,856,306.46/91,746.20
  6. Step 6: Final answer
    x = 120,123.30

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1.5x scale

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.