Home / 109,375.20-164,127.60-72,042.30

Finding the Fourth Proportional to 109,375.20, 164,127.60 and 72,042.30

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Solution

The fourth proportional to 109,375.20, 164,127.60 and 72,042.30 is: 108,106.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,375.20 : 164,127.60 = 72,042.30 : x
  2. Step 2: Convert to fraction form
    109,375.20/164,127.60 = 72,042.30/x
  3. Step 3: Cross multiply
    109,375.20x = 164,127.60 × 72,042.30
  4. Step 4: Simplify right side
    109,375.20x = 11,824,129,797.48
  5. Step 5: Solve for x
    x = 11,824,129,797.48/109,375.20
  6. Step 6: Final answer
    x = 108,106.13

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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.