Home / 158,449.38-218,660.14-91,381.38

Finding the Fourth Proportional to 158,449.38, 218,660.14 and 91,381.38

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Solution

The fourth proportional to 158,449.38, 218,660.14 and 91,381.38 is: 126,106.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,449.38 : 218,660.14 = 91,381.38 : x
  2. Step 2: Convert to fraction form
    158,449.38/218,660.14 = 91,381.38/x
  3. Step 3: Cross multiply
    158,449.38x = 218,660.14 × 91,381.38
  4. Step 4: Simplify right side
    158,449.38x = 19,981,465,344.19
  5. Step 5: Solve for x
    x = 19,981,465,344.19/158,449.38
  6. Step 6: Final answer
    x = 126,106.30

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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.