Home / 132,560.72-198,765.78-90,491.76

Finding the Fourth Proportional to 132,560.72, 198,765.78 and 90,491.76

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Solution

The fourth proportional to 132,560.72, 198,765.78 and 90,491.76 is: 135,686.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,560.72 : 198,765.78 = 90,491.76 : x
  2. Step 2: Convert to fraction form
    132,560.72/198,765.78 = 90,491.76/x
  3. Step 3: Cross multiply
    132,560.72x = 198,765.78 × 90,491.76
  4. Step 4: Simplify right side
    132,560.72x = 17,986,665,259.97
  5. Step 5: Solve for x
    x = 17,986,665,259.97/132,560.72
  6. Step 6: Final answer
    x = 135,686.24

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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.