Home / 113,121.85-156,109.44-62,135.78

Finding the Fourth Proportional to 113,121.85, 156,109.44 and 62,135.78

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Solution

The fourth proportional to 113,121.85, 156,109.44 and 62,135.78 is: 85,748.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,121.85 : 156,109.44 = 62,135.78 : x
  2. Step 2: Convert to fraction form
    113,121.85/156,109.44 = 62,135.78/x
  3. Step 3: Cross multiply
    113,121.85x = 156,109.44 × 62,135.78
  4. Step 4: Simplify right side
    113,121.85x = 9,699,981,819.76
  5. Step 5: Solve for x
    x = 9,699,981,819.76/113,121.85
  6. Step 6: Final answer
    x = 85,748.08

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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.