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Finding the Fourth Proportional to 100,711.60, 151,062.60 and 34,145.20

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Solution

The fourth proportional to 100,711.60, 151,062.60 and 34,145.20 is: 51,216.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,711.60 : 151,062.60 = 34,145.20 : x
  2. Step 2: Convert to fraction form
    100,711.60/151,062.60 = 34,145.20/x
  3. Step 3: Cross multiply
    100,711.60x = 151,062.60 × 34,145.20
  4. Step 4: Simplify right side
    100,711.60x = 5,158,062,689.52
  5. Step 5: Solve for x
    x = 5,158,062,689.52/100,711.60
  6. Step 6: Final answer
    x = 51,216.17

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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.