Home / 158,610.28-218,862-90,631.66

Finding the Fourth Proportional to 158,610.28, 218,862 and 90,631.66

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Solution

The fourth proportional to 158,610.28, 218,862 and 90,631.66 is: 125,060.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,610.28 : 218,862 = 90,631.66 : x
  2. Step 2: Convert to fraction form
    158,610.28/218,862 = 90,631.66/x
  3. Step 3: Cross multiply
    158,610.28x = 218,862 × 90,631.66
  4. Step 4: Simplify right side
    158,610.28x = 19,835,826,370.92
  5. Step 5: Solve for x
    x = 19,835,826,370.92/158,610.28
  6. Step 6: Final answer
    x = 125,060.16

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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.