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Finding the Fourth Proportional to 121,455.72, 167,609.79 and 67,744.22

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Solution

The fourth proportional to 121,455.72, 167,609.79 and 67,744.22 is: 93,487.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,455.72 : 167,609.79 = 67,744.22 : x
  2. Step 2: Convert to fraction form
    121,455.72/167,609.79 = 67,744.22/x
  3. Step 3: Cross multiply
    121,455.72x = 167,609.79 × 67,744.22
  4. Step 4: Simplify right side
    121,455.72x = 11,354,593,649.86
  5. Step 5: Solve for x
    x = 11,354,593,649.86/121,455.72
  6. Step 6: Final answer
    x = 93,487.52

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1.5x scale

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.