Home / 204,117.28-306,107.76-85,766.56

Finding the Fourth Proportional to 204,117.28, 306,107.76 and 85,766.56

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Solution

The fourth proportional to 204,117.28, 306,107.76 and 85,766.56 is: 128,621.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,117.28 : 306,107.76 = 85,766.56 : x
  2. Step 2: Convert to fraction form
    204,117.28/306,107.76 = 85,766.56/x
  3. Step 3: Cross multiply
    204,117.28x = 306,107.76 × 85,766.56
  4. Step 4: Simplify right side
    204,117.28x = 26,253,809,564.51
  5. Step 5: Solve for x
    x = 26,253,809,564.51/204,117.28
  6. Step 6: Final answer
    x = 128,621.20

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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.