Home / 91,129.42-136,678.37-41,197.90

Finding the Fourth Proportional to 91,129.42, 136,678.37 and 41,197.90

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Solution

The fourth proportional to 91,129.42, 136,678.37 and 41,197.90 is: 61,789.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,129.42 : 136,678.37 = 41,197.90 : x
  2. Step 2: Convert to fraction form
    91,129.42/136,678.37 = 41,197.90/x
  3. Step 3: Cross multiply
    91,129.42x = 136,678.37 × 41,197.90
  4. Step 4: Simplify right side
    91,129.42x = 5,630,861,819.42
  5. Step 5: Solve for x
    x = 5,630,861,819.42/91,129.42
  6. Step 6: Final answer
    x = 61,789.73

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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.