Home / 91,330.20-136,993.38-42,082.20

Finding the Fourth Proportional to 91,330.20, 136,993.38 and 42,082.20

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Solution

The fourth proportional to 91,330.20, 136,993.38 and 42,082.20 is: 63,122.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,330.20 : 136,993.38 = 42,082.20 : x
  2. Step 2: Convert to fraction form
    91,330.20/136,993.38 = 42,082.20/x
  3. Step 3: Cross multiply
    91,330.20x = 136,993.38 × 42,082.20
  4. Step 4: Simplify right side
    91,330.20x = 5,764,982,815.84
  5. Step 5: Solve for x
    x = 5,764,982,815.84/91,330.20
  6. Step 6: Final answer
    x = 63,122.42

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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.