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Finding the Fourth Proportional to 100,882.80, 151,345.80 and 30,769.20

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Solution

The fourth proportional to 100,882.80, 151,345.80 and 30,769.20 is: 46,160.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,882.80 : 151,345.80 = 30,769.20 : x
  2. Step 2: Convert to fraction form
    100,882.80/151,345.80 = 30,769.20/x
  3. Step 3: Cross multiply
    100,882.80x = 151,345.80 × 30,769.20
  4. Step 4: Simplify right side
    100,882.80x = 4,656,789,189.36
  5. Step 5: Solve for x
    x = 4,656,789,189.36/100,882.80
  6. Step 6: Final answer
    x = 46,160.39

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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.