Home / 121,231.42-167,287.37-67,521.43

Finding the Fourth Proportional to 121,231.42, 167,287.37 and 67,521.43

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Solution

The fourth proportional to 121,231.42, 167,287.37 and 67,521.43 is: 93,172.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,231.42 : 167,287.37 = 67,521.43 : x
  2. Step 2: Convert to fraction form
    121,231.42/167,287.37 = 67,521.43/x
  3. Step 3: Cross multiply
    121,231.42x = 167,287.37 × 67,521.43
  4. Step 4: Simplify right side
    121,231.42x = 11,295,482,443.34
  5. Step 5: Solve for x
    x = 11,295,482,443.34/121,231.42
  6. Step 6: Final answer
    x = 93,172.90

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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.