Home / 91,160.28-136,739.61-28,830.78

Finding the Fourth Proportional to 91,160.28, 136,739.61 and 28,830.78

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Solution

The fourth proportional to 91,160.28, 136,739.61 and 28,830.78 is: 43,245.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,160.28 : 136,739.61 = 28,830.78 : x
  2. Step 2: Convert to fraction form
    91,160.28/136,739.61 = 28,830.78/x
  3. Step 3: Cross multiply
    91,160.28x = 136,739.61 × 28,830.78
  4. Step 4: Simplify right side
    91,160.28x = 3,942,309,613.20
  5. Step 5: Solve for x
    x = 3,942,309,613.20/91,160.28
  6. Step 6: Final answer
    x = 43,245.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.