Home / 128,306.25-192,460.05-34,812

Finding the Fourth Proportional to 128,306.25, 192,460.05 and 34,812

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Solution

The fourth proportional to 128,306.25, 192,460.05 and 34,812 is: 52,218.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,306.25 : 192,460.05 = 34,812 : x
  2. Step 2: Convert to fraction form
    128,306.25/192,460.05 = 34,812/x
  3. Step 3: Cross multiply
    128,306.25x = 192,460.05 × 34,812
  4. Step 4: Simplify right side
    128,306.25x = 6,699,919,260.60
  5. Step 5: Solve for x
    x = 6,699,919,260.60/128,306.25
  6. Step 6: Final answer
    x = 52,218.18

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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.