Home / 159,545.55-220,134.21-90,619.69

Finding the Fourth Proportional to 159,545.55, 220,134.21 and 90,619.69

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Solution

The fourth proportional to 159,545.55, 220,134.21 and 90,619.69 is: 125,033.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,545.55 : 220,134.21 = 90,619.69 : x
  2. Step 2: Convert to fraction form
    159,545.55/220,134.21 = 90,619.69/x
  3. Step 3: Cross multiply
    159,545.55x = 220,134.21 × 90,619.69
  4. Step 4: Simplify right side
    159,545.55x = 19,948,493,868.59
  5. Step 5: Solve for x
    x = 19,948,493,868.59/159,545.55
  6. Step 6: Final answer
    x = 125,033.22

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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.