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Finding the Fourth Proportional to 150,419.48, 207,599.61 and 86,755.88

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Solution

The fourth proportional to 150,419.48, 207,599.61 and 86,755.88 is: 119,735.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,419.48 : 207,599.61 = 86,755.88 : x
  2. Step 2: Convert to fraction form
    150,419.48/207,599.61 = 86,755.88/x
  3. Step 3: Cross multiply
    150,419.48x = 207,599.61 × 86,755.88
  4. Step 4: Simplify right side
    150,419.48x = 18,010,486,853.21
  5. Step 5: Solve for x
    x = 18,010,486,853.21/150,419.48
  6. Step 6: Final answer
    x = 119,735.07

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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.