Home / 218,711.85-328,067.78-125,151.45

Finding the Fourth Proportional to 218,711.85, 328,067.78 and 125,151.45

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Solution

The fourth proportional to 218,711.85, 328,067.78 and 125,151.45 is: 187,727.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,711.85 : 328,067.78 = 125,151.45 : x
  2. Step 2: Convert to fraction form
    218,711.85/328,067.78 = 125,151.45/x
  3. Step 3: Cross multiply
    218,711.85x = 328,067.78 × 125,151.45
  4. Step 4: Simplify right side
    218,711.85x = 41,058,157,739.52
  5. Step 5: Solve for x
    x = 41,058,157,739.52/218,711.85
  6. Step 6: Final answer
    x = 187,727.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.