Home / 121,618.20-182,330.10-51,439.80

Finding the Fourth Proportional to 121,618.20, 182,330.10 and 51,439.80

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Solution

The fourth proportional to 121,618.20, 182,330.10 and 51,439.80 is: 77,118.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,618.20 : 182,330.10 = 51,439.80 : x
  2. Step 2: Convert to fraction form
    121,618.20/182,330.10 = 51,439.80/x
  3. Step 3: Cross multiply
    121,618.20x = 182,330.10 × 51,439.80
  4. Step 4: Simplify right side
    121,618.20x = 9,379,023,877.98
  5. Step 5: Solve for x
    x = 9,379,023,877.98/121,618.20
  6. Step 6: Final answer
    x = 77,118.59

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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.