Home / 121,396.20-167,527.78-67,687.40

Finding the Fourth Proportional to 121,396.20, 167,527.78 and 67,687.40

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Solution

The fourth proportional to 121,396.20, 167,527.78 and 67,687.40 is: 93,409.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,396.20 : 167,527.78 = 67,687.40 : x
  2. Step 2: Convert to fraction form
    121,396.20/167,527.78 = 67,687.40/x
  3. Step 3: Cross multiply
    121,396.20x = 167,527.78 × 67,687.40
  4. Step 4: Simplify right side
    121,396.20x = 11,339,519,855.97
  5. Step 5: Solve for x
    x = 11,339,519,855.97/121,396.20
  6. Step 6: Final answer
    x = 93,409.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.