Home / 132,655.60-198,983.40-90,665.20

Finding the Fourth Proportional to 132,655.60, 198,983.40 and 90,665.20

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Solution

The fourth proportional to 132,655.60, 198,983.40 and 90,665.20 is: 135,997.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,655.60 : 198,983.40 = 90,665.20 : x
  2. Step 2: Convert to fraction form
    132,655.60/198,983.40 = 90,665.20/x
  3. Step 3: Cross multiply
    132,655.60x = 198,983.40 × 90,665.20
  4. Step 4: Simplify right side
    132,655.60x = 18,040,869,757.68
  5. Step 5: Solve for x
    x = 18,040,869,757.68/132,655.60
  6. Step 6: Final answer
    x = 135,997.80

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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.