Home / 158,367.16-218,550.20-90,382.78

Finding the Fourth Proportional to 158,367.16, 218,550.20 and 90,382.78

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Solution

The fourth proportional to 158,367.16, 218,550.20 and 90,382.78 is: 124,730.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,367.16 : 218,550.20 = 90,382.78 : x
  2. Step 2: Convert to fraction form
    158,367.16/218,550.20 = 90,382.78/x
  3. Step 3: Cross multiply
    158,367.16x = 218,550.20 × 90,382.78
  4. Step 4: Simplify right side
    158,367.16x = 19,753,174,645.56
  5. Step 5: Solve for x
    x = 19,753,174,645.56/158,367.16
  6. Step 6: Final answer
    x = 124,730.24

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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.