Home / 158,176.38-218,288.88-90,203.61

Finding the Fourth Proportional to 158,176.38, 218,288.88 and 90,203.61

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Solution

The fourth proportional to 158,176.38, 218,288.88 and 90,203.61 is: 124,484.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,176.38 : 218,288.88 = 90,203.61 : x
  2. Step 2: Convert to fraction form
    158,176.38/218,288.88 = 90,203.61/x
  3. Step 3: Cross multiply
    158,176.38x = 218,288.88 × 90,203.61
  4. Step 4: Simplify right side
    158,176.38x = 19,690,444,998.86
  5. Step 5: Solve for x
    x = 19,690,444,998.86/158,176.38
  6. Step 6: Final answer
    x = 124,484.10

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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.