Home / 192,621.78-288,985.73-80,354.70

Finding the Fourth Proportional to 192,621.78, 288,985.73 and 80,354.70

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Solution

The fourth proportional to 192,621.78, 288,985.73 and 80,354.70 is: 120,554.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,621.78 : 288,985.73 = 80,354.70 : x
  2. Step 2: Convert to fraction form
    192,621.78/288,985.73 = 80,354.70/x
  3. Step 3: Cross multiply
    192,621.78x = 288,985.73 × 80,354.70
  4. Step 4: Simplify right side
    192,621.78x = 23,221,361,236.66
  5. Step 5: Solve for x
    x = 23,221,361,236.66/192,621.78
  6. Step 6: Final answer
    x = 120,554.18

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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.