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Finding the Fourth Proportional to 158,169.49, 218,279.13 and 86,549.62

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Solution

The fourth proportional to 158,169.49, 218,279.13 and 86,549.62 is: 119,441.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,169.49 : 218,279.13 = 86,549.62 : x
  2. Step 2: Convert to fraction form
    158,169.49/218,279.13 = 86,549.62/x
  3. Step 3: Cross multiply
    158,169.49x = 218,279.13 × 86,549.62
  4. Step 4: Simplify right side
    158,169.49x = 18,891,975,755.43
  5. Step 5: Solve for x
    x = 18,891,975,755.43/158,169.49
  6. Step 6: Final answer
    x = 119,441.34

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1.5x scale

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.