Home / 158,364.81-218,546.91-90,380.43

Finding the Fourth Proportional to 158,364.81, 218,546.91 and 90,380.43

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Solution

The fourth proportional to 158,364.81, 218,546.91 and 90,380.43 is: 124,726.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,364.81 : 218,546.91 = 90,380.43 : x
  2. Step 2: Convert to fraction form
    158,364.81/218,546.91 = 90,380.43/x
  3. Step 3: Cross multiply
    158,364.81x = 218,546.91 × 90,380.43
  4. Step 4: Simplify right side
    158,364.81x = 19,752,363,700.97
  5. Step 5: Solve for x
    x = 19,752,363,700.97/158,364.81
  6. Step 6: Final answer
    x = 124,726.98

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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.