Home / 121,396.85-167,528.36-67,685.21

Finding the Fourth Proportional to 121,396.85, 167,528.36 and 67,685.21

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Solution

The fourth proportional to 121,396.85, 167,528.36 and 67,685.21 is: 93,405.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,396.85 : 167,528.36 = 67,685.21 : x
  2. Step 2: Convert to fraction form
    121,396.85/167,528.36 = 67,685.21/x
  3. Step 3: Cross multiply
    121,396.85x = 167,528.36 × 67,685.21
  4. Step 4: Simplify right side
    121,396.85x = 11,339,192,227.56
  5. Step 5: Solve for x
    x = 11,339,192,227.56/121,396.85
  6. Step 6: Final answer
    x = 93,405.98

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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.