Home / 135,909.10-204,082.35-91,731.70

Finding the Fourth Proportional to 135,909.10, 204,082.35 and 91,731.70

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Solution

The fourth proportional to 135,909.10, 204,082.35 and 91,731.70 is: 137,745.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,909.10 : 204,082.35 = 91,731.70 : x
  2. Step 2: Convert to fraction form
    135,909.10/204,082.35 = 91,731.70/x
  3. Step 3: Cross multiply
    135,909.10x = 204,082.35 × 91,731.70
  4. Step 4: Simplify right side
    135,909.10x = 18,720,820,905.50
  5. Step 5: Solve for x
    x = 18,720,820,905.50/135,909.10
  6. Step 6: Final answer
    x = 137,745.16

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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.