Home / 109,959.20-164,912.40-31,080.80

Finding the Fourth Proportional to 109,959.20, 164,912.40 and 31,080.80

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Solution

The fourth proportional to 109,959.20, 164,912.40 and 31,080.80 is: 46,613.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,959.20 : 164,912.40 = 31,080.80 : x
  2. Step 2: Convert to fraction form
    109,959.20/164,912.40 = 31,080.80/x
  3. Step 3: Cross multiply
    109,959.20x = 164,912.40 × 31,080.80
  4. Step 4: Simplify right side
    109,959.20x = 5,125,609,321.92
  5. Step 5: Solve for x
    x = 5,125,609,321.92/109,959.20
  6. Step 6: Final answer
    x = 46,613.74

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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.