Home / 123,811.10-185,716.65-115,937.90

Finding the Fourth Proportional to 123,811.10, 185,716.65 and 115,937.90

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Solution

The fourth proportional to 123,811.10, 185,716.65 and 115,937.90 is: 173,906.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,811.10 : 185,716.65 = 115,937.90 : x
  2. Step 2: Convert to fraction form
    123,811.10/185,716.65 = 115,937.90/x
  3. Step 3: Cross multiply
    123,811.10x = 185,716.65 × 115,937.90
  4. Step 4: Simplify right side
    123,811.10x = 21,531,598,396.04
  5. Step 5: Solve for x
    x = 21,531,598,396.04/123,811.10
  6. Step 6: Final answer
    x = 173,906.85

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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.