Home / 285,959.11-428,659.75-136,159.15

Finding the Fourth Proportional to 285,959.11, 428,659.75 and 136,159.15

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Solution

The fourth proportional to 285,959.11, 428,659.75 and 136,159.15 is: 204,105.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,959.11 : 428,659.75 = 136,159.15 : x
  2. Step 2: Convert to fraction form
    285,959.11/428,659.75 = 136,159.15/x
  3. Step 3: Cross multiply
    285,959.11x = 428,659.75 × 136,159.15
  4. Step 4: Simplify right side
    285,959.11x = 58,365,947,199.21
  5. Step 5: Solve for x
    x = 58,365,947,199.21/285,959.11
  6. Step 6: Final answer
    x = 204,105.92

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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.