Home / 109,170.60-150,649.11-61,421.91

Finding the Fourth Proportional to 109,170.60, 150,649.11 and 61,421.91

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Solution

The fourth proportional to 109,170.60, 150,649.11 and 61,421.91 is: 84,758.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,170.60 : 150,649.11 = 61,421.91 : x
  2. Step 2: Convert to fraction form
    109,170.60/150,649.11 = 61,421.91/x
  3. Step 3: Cross multiply
    109,170.60x = 150,649.11 × 61,421.91
  4. Step 4: Simplify right side
    109,170.60x = 9,253,156,076.00
  5. Step 5: Solve for x
    x = 9,253,156,076.00/109,170.60
  6. Step 6: Final answer
    x = 84,758.68

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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.