Home / 158,166.38-218,275.08-90,193.61

Finding the Fourth Proportional to 158,166.38, 218,275.08 and 90,193.61

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Solution

The fourth proportional to 158,166.38, 218,275.08 and 90,193.61 is: 124,470.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,166.38 : 218,275.08 = 90,193.61 : x
  2. Step 2: Convert to fraction form
    158,166.38/218,275.08 = 90,193.61/x
  3. Step 3: Cross multiply
    158,166.38x = 218,275.08 × 90,193.61
  4. Step 4: Simplify right side
    158,166.38x = 19,687,017,438.24
  5. Step 5: Solve for x
    x = 19,687,017,438.24/158,166.38
  6. Step 6: Final answer
    x = 124,470.30

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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.