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Finding the Fourth Proportional to 121,181.78, 167,230.50 and 67,465.42

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Solution

The fourth proportional to 121,181.78, 167,230.50 and 67,465.42 is: 93,102.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,181.78 : 167,230.50 = 67,465.42 : x
  2. Step 2: Convert to fraction form
    121,181.78/167,230.50 = 67,465.42/x
  3. Step 3: Cross multiply
    121,181.78x = 167,230.50 × 67,465.42
  4. Step 4: Simplify right side
    121,181.78x = 11,282,275,083.16
  5. Step 5: Solve for x
    x = 11,282,275,083.16/121,181.78
  6. Step 6: Final answer
    x = 93,102.07

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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.