Home / 179,839.12-269,812.20-79,985.56

Finding the Fourth Proportional to 179,839.12, 269,812.20 and 79,985.56

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Solution

The fourth proportional to 179,839.12, 269,812.20 and 79,985.56 is: 120,002.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,839.12 : 269,812.20 = 79,985.56 : x
  2. Step 2: Convert to fraction form
    179,839.12/269,812.20 = 79,985.56/x
  3. Step 3: Cross multiply
    179,839.12x = 269,812.20 × 79,985.56
  4. Step 4: Simplify right side
    179,839.12x = 21,581,079,911.83
  5. Step 5: Solve for x
    x = 21,581,079,911.83/179,839.12
  6. Step 6: Final answer
    x = 120,002.14

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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.