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Finding the Fourth Proportional to 90,672.10, 136,008.15 and 64,233.70

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Solution

The fourth proportional to 90,672.10, 136,008.15 and 64,233.70 is: 96,350.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,672.10 : 136,008.15 = 64,233.70 : x
  2. Step 2: Convert to fraction form
    90,672.10/136,008.15 = 64,233.70/x
  3. Step 3: Cross multiply
    90,672.10x = 136,008.15 × 64,233.70
  4. Step 4: Simplify right side
    90,672.10x = 8,736,306,704.66
  5. Step 5: Solve for x
    x = 8,736,306,704.66/90,672.10
  6. Step 6: Final answer
    x = 96,350.55

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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.