Home / 121,612.20-182,321.10-51,433.80

Finding the Fourth Proportional to 121,612.20, 182,321.10 and 51,433.80

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Solution

The fourth proportional to 121,612.20, 182,321.10 and 51,433.80 is: 77,109.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,612.20 : 182,321.10 = 51,433.80 : x
  2. Step 2: Convert to fraction form
    121,612.20/182,321.10 = 51,433.80/x
  3. Step 3: Cross multiply
    121,612.20x = 182,321.10 × 51,433.80
  4. Step 4: Simplify right side
    121,612.20x = 9,377,466,993.18
  5. Step 5: Solve for x
    x = 9,377,466,993.18/121,612.20
  6. Step 6: Final answer
    x = 77,109.59

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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.