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Finding the Fourth Proportional to 158,279.97, 218,424.43 and 86,658.46

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Solution

The fourth proportional to 158,279.97, 218,424.43 and 86,658.46 is: 119,587.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,279.97 : 218,424.43 = 86,658.46 : x
  2. Step 2: Convert to fraction form
    158,279.97/218,424.43 = 86,658.46/x
  3. Step 3: Cross multiply
    158,279.97x = 218,424.43 × 86,658.46
  4. Step 4: Simplify right side
    158,279.97x = 18,928,324,292.44
  5. Step 5: Solve for x
    x = 18,928,324,292.44/158,279.97
  6. Step 6: Final answer
    x = 119,587.61

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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.