Home / 158,387.06-218,589.82-90,414.25

Finding the Fourth Proportional to 158,387.06, 218,589.82 and 90,414.25

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Solution

The fourth proportional to 158,387.06, 218,589.82 and 90,414.25 is: 124,780.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,387.06 : 218,589.82 = 90,414.25 : x
  2. Step 2: Convert to fraction form
    158,387.06/218,589.82 = 90,414.25/x
  3. Step 3: Cross multiply
    158,387.06x = 218,589.82 × 90,414.25
  4. Step 4: Simplify right side
    158,387.06x = 19,763,634,632.94
  5. Step 5: Solve for x
    x = 19,763,634,632.94/158,387.06
  6. Step 6: Final answer
    x = 124,780.61

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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.