Home / 136,287.20-204,440.40-77,151.20

Finding the Fourth Proportional to 136,287.20, 204,440.40 and 77,151.20

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Solution

The fourth proportional to 136,287.20, 204,440.40 and 77,151.20 is: 115,732.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,287.20 : 204,440.40 = 77,151.20 : x
  2. Step 2: Convert to fraction form
    136,287.20/204,440.40 = 77,151.20/x
  3. Step 3: Cross multiply
    136,287.20x = 204,440.40 × 77,151.20
  4. Step 4: Simplify right side
    136,287.20x = 15,772,822,188.48
  5. Step 5: Solve for x
    x = 15,772,822,188.48/136,287.20
  6. Step 6: Final answer
    x = 115,732.23

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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.