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Finding the Fourth Proportional to 158,244.43, 218,379.71 and 86,631.11

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Solution

The fourth proportional to 158,244.43, 218,379.71 and 86,631.11 is: 119,552.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,244.43 : 218,379.71 = 86,631.11 : x
  2. Step 2: Convert to fraction form
    158,244.43/218,379.71 = 86,631.11/x
  3. Step 3: Cross multiply
    158,244.43x = 218,379.71 × 86,631.11
  4. Step 4: Simplify right side
    158,244.43x = 18,918,476,678.78
  5. Step 5: Solve for x
    x = 18,918,476,678.78/158,244.43
  6. Step 6: Final answer
    x = 119,552.25

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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.