Home / 121,158.56-167,178.26-67,443.20

Finding the Fourth Proportional to 121,158.56, 167,178.26 and 67,443.20

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Solution

The fourth proportional to 121,158.56, 167,178.26 and 67,443.20 is: 93,060.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,158.56 : 167,178.26 = 67,443.20 : x
  2. Step 2: Convert to fraction form
    121,158.56/167,178.26 = 67,443.20/x
  3. Step 3: Cross multiply
    121,158.56x = 167,178.26 × 67,443.20
  4. Step 4: Simplify right side
    121,158.56x = 11,275,036,824.83
  5. Step 5: Solve for x
    x = 11,275,036,824.83/121,158.56
  6. Step 6: Final answer
    x = 93,060.18

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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.