Home / 121,690.62-167,742.54-111,914.73

Finding the Fourth Proportional to 121,690.62, 167,742.54 and 111,914.73

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Solution

The fourth proportional to 121,690.62, 167,742.54 and 111,914.73 is: 154,267.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,690.62 : 167,742.54 = 111,914.73 : x
  2. Step 2: Convert to fraction form
    121,690.62/167,742.54 = 111,914.73/x
  3. Step 3: Cross multiply
    121,690.62x = 167,742.54 × 111,914.73
  4. Step 4: Simplify right side
    121,690.62x = 18,772,861,073.61
  5. Step 5: Solve for x
    x = 18,772,861,073.61/121,690.62
  6. Step 6: Final answer
    x = 154,267.12

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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.