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Finding the Fourth Proportional to 150,719.92, 207,996.78 and 90,354.04

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Solution

The fourth proportional to 150,719.92, 207,996.78 and 90,354.04 is: 124,690.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,719.92 : 207,996.78 = 90,354.04 : x
  2. Step 2: Convert to fraction form
    150,719.92/207,996.78 = 90,354.04/x
  3. Step 3: Cross multiply
    150,719.92x = 207,996.78 × 90,354.04
  4. Step 4: Simplify right side
    150,719.92x = 18,793,349,379.99
  5. Step 5: Solve for x
    x = 18,793,349,379.99/150,719.92
  6. Step 6: Final answer
    x = 124,690.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.