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Finding the Fourth Proportional to 100,981.80, 151,452.86 and 34,425.64

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Solution

The fourth proportional to 100,981.80, 151,452.86 and 34,425.64 is: 51,631.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,981.80 : 151,452.86 = 34,425.64 : x
  2. Step 2: Convert to fraction form
    100,981.80/151,452.86 = 34,425.64/x
  3. Step 3: Cross multiply
    100,981.80x = 151,452.86 × 34,425.64
  4. Step 4: Simplify right side
    100,981.80x = 5,213,861,635.33
  5. Step 5: Solve for x
    x = 5,213,861,635.33/100,981.80
  6. Step 6: Final answer
    x = 51,631.70

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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.