Home / 123,414.30-185,121.45-109,636.20

Finding the Fourth Proportional to 123,414.30, 185,121.45 and 109,636.20

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Solution

The fourth proportional to 123,414.30, 185,121.45 and 109,636.20 is: 164,454.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,414.30 : 185,121.45 = 109,636.20 : x
  2. Step 2: Convert to fraction form
    123,414.30/185,121.45 = 109,636.20/x
  3. Step 3: Cross multiply
    123,414.30x = 185,121.45 × 109,636.20
  4. Step 4: Simplify right side
    123,414.30x = 20,296,012,316.49
  5. Step 5: Solve for x
    x = 20,296,012,316.49/123,414.30
  6. Step 6: Final answer
    x = 164,454.30

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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.