Home / 80,895.48-121,343.22-80,778.66

Finding the Fourth Proportional to 80,895.48, 121,343.22 and 80,778.66

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Solution

The fourth proportional to 80,895.48, 121,343.22 and 80,778.66 is: 121,167.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,895.48 : 121,343.22 = 80,778.66 : x
  2. Step 2: Convert to fraction form
    80,895.48/121,343.22 = 80,778.66/x
  3. Step 3: Cross multiply
    80,895.48x = 121,343.22 × 80,778.66
  4. Step 4: Simplify right side
    80,895.48x = 9,801,942,711.69
  5. Step 5: Solve for x
    x = 9,801,942,711.69/80,895.48
  6. Step 6: Final answer
    x = 121,167.99

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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.