Home / 199,585.53-275,489.09-123,128.42

Finding the Fourth Proportional to 199,585.53, 275,489.09 and 123,128.42

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Solution

The fourth proportional to 199,585.53, 275,489.09 and 123,128.42 is: 169,954.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,585.53 : 275,489.09 = 123,128.42 : x
  2. Step 2: Convert to fraction form
    199,585.53/275,489.09 = 123,128.42/x
  3. Step 3: Cross multiply
    199,585.53x = 275,489.09 × 123,128.42
  4. Step 4: Simplify right side
    199,585.53x = 33,920,534,385.85
  5. Step 5: Solve for x
    x = 33,920,534,385.85/199,585.53
  6. Step 6: Final answer
    x = 169,954.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.