Home / 121,621.62-167,836.26-67,907.55

Finding the Fourth Proportional to 121,621.62, 167,836.26 and 67,907.55

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Solution

The fourth proportional to 121,621.62, 167,836.26 and 67,907.55 is: 93,711.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,621.62 : 167,836.26 = 67,907.55 : x
  2. Step 2: Convert to fraction form
    121,621.62/167,836.26 = 67,907.55/x
  3. Step 3: Cross multiply
    121,621.62x = 167,836.26 × 67,907.55
  4. Step 4: Simplify right side
    121,621.62x = 11,397,349,217.76
  5. Step 5: Solve for x
    x = 11,397,349,217.76/121,621.62
  6. Step 6: Final answer
    x = 93,711.54

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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.