Home / 81,167.25-121,778.21-51,146.62

Finding the Fourth Proportional to 81,167.25, 121,778.21 and 51,146.62

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Solution

The fourth proportional to 81,167.25, 121,778.21 and 51,146.62 is: 76,737.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,167.25 : 121,778.21 = 51,146.62 : x
  2. Step 2: Convert to fraction form
    81,167.25/121,778.21 = 51,146.62/x
  3. Step 3: Cross multiply
    81,167.25x = 121,778.21 × 51,146.62
  4. Step 4: Simplify right side
    81,167.25x = 6,228,543,831.15
  5. Step 5: Solve for x
    x = 6,228,543,831.15/81,167.25
  6. Step 6: Final answer
    x = 76,737.15

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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.