Home / 90,693.90-124,827.24-79,867.91

Finding the Fourth Proportional to 90,693.90, 124,827.24 and 79,867.91

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Solution

The fourth proportional to 90,693.90, 124,827.24 and 79,867.91 is: 109,926.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,693.90 : 124,827.24 = 79,867.91 : x
  2. Step 2: Convert to fraction form
    90,693.90/124,827.24 = 79,867.91/x
  3. Step 3: Cross multiply
    90,693.90x = 124,827.24 × 79,867.91
  4. Step 4: Simplify right side
    90,693.90x = 9,969,690,769.87
  5. Step 5: Solve for x
    x = 9,969,690,769.87/90,693.90
  6. Step 6: Final answer
    x = 109,926.81

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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.