Home / 121,520.23-182,034.30-68,868.20

Finding the Fourth Proportional to 121,520.23, 182,034.30 and 68,868.20

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Solution

The fourth proportional to 121,520.23, 182,034.30 and 68,868.20 is: 103,162.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,520.23 : 182,034.30 = 68,868.20 : x
  2. Step 2: Convert to fraction form
    121,520.23/182,034.30 = 68,868.20/x
  3. Step 3: Cross multiply
    121,520.23x = 182,034.30 × 68,868.20
  4. Step 4: Simplify right side
    121,520.23x = 12,536,374,579.26
  5. Step 5: Solve for x
    x = 12,536,374,579.26/121,520.23
  6. Step 6: Final answer
    x = 103,162.87

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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.