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Finding the Fourth Proportional to 91,337.30, 136,811.55 and 75,785.30

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Solution

The fourth proportional to 91,337.30, 136,811.55 and 75,785.30 is: 113,516.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,337.30 : 136,811.55 = 75,785.30 : x
  2. Step 2: Convert to fraction form
    91,337.30/136,811.55 = 75,785.30/x
  3. Step 3: Cross multiply
    91,337.30x = 136,811.55 × 75,785.30
  4. Step 4: Simplify right side
    91,337.30x = 10,368,304,360.22
  5. Step 5: Solve for x
    x = 10,368,304,360.22/91,337.30
  6. Step 6: Final answer
    x = 113,516.65

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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.