Home / 206,880.28-309,708.02-127,740.04

Finding the Fourth Proportional to 206,880.28, 309,708.02 and 127,740.04

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Solution

The fourth proportional to 206,880.28, 309,708.02 and 127,740.04 is: 191,231.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,880.28 : 309,708.02 = 127,740.04 : x
  2. Step 2: Convert to fraction form
    206,880.28/309,708.02 = 127,740.04/x
  3. Step 3: Cross multiply
    206,880.28x = 309,708.02 × 127,740.04
  4. Step 4: Simplify right side
    206,880.28x = 39,562,114,863.12
  5. Step 5: Solve for x
    x = 39,562,114,863.12/206,880.28
  6. Step 6: Final answer
    x = 191,231.93

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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.