Home / 126,080.40-188,999.10-72,717.60

Finding the Fourth Proportional to 126,080.40, 188,999.10 and 72,717.60

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Solution

The fourth proportional to 126,080.40, 188,999.10 and 72,717.60 is: 109,006.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,080.40 : 188,999.10 = 72,717.60 : x
  2. Step 2: Convert to fraction form
    126,080.40/188,999.10 = 72,717.60/x
  3. Step 3: Cross multiply
    126,080.40x = 188,999.10 × 72,717.60
  4. Step 4: Simplify right side
    126,080.40x = 13,743,560,954.16
  5. Step 5: Solve for x
    x = 13,743,560,954.16/126,080.40
  6. Step 6: Final answer
    x = 109,006.32

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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.