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Finding the Fourth Proportional to 123,998.80, 171,109.92 and 67,408.96

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Solution

The fourth proportional to 123,998.80, 171,109.92 and 67,408.96 is: 93,019.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,998.80 : 171,109.92 = 67,408.96 : x
  2. Step 2: Convert to fraction form
    123,998.80/171,109.92 = 67,408.96/x
  3. Step 3: Cross multiply
    123,998.80x = 171,109.92 × 67,408.96
  4. Step 4: Simplify right side
    123,998.80x = 11,534,341,752.88
  5. Step 5: Solve for x
    x = 11,534,341,752.88/123,998.80
  6. Step 6: Final answer
    x = 93,019.79

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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.