Home / 206,865.28-309,685.56-127,725.04

Finding the Fourth Proportional to 206,865.28, 309,685.56 and 127,725.04

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Solution

The fourth proportional to 206,865.28, 309,685.56 and 127,725.04 is: 191,209.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,865.28 : 309,685.56 = 127,725.04 : x
  2. Step 2: Convert to fraction form
    206,865.28/309,685.56 = 127,725.04/x
  3. Step 3: Cross multiply
    206,865.28x = 309,685.56 × 127,725.04
  4. Step 4: Simplify right side
    206,865.28x = 39,554,600,538.42
  5. Step 5: Solve for x
    x = 39,554,600,538.42/206,865.28
  6. Step 6: Final answer
    x = 191,209.47

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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.