Home / 129,241.96-178,350.79-71,881.11

Finding the Fourth Proportional to 129,241.96, 178,350.79 and 71,881.11

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Solution

The fourth proportional to 129,241.96, 178,350.79 and 71,881.11 is: 99,194.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,241.96 : 178,350.79 = 71,881.11 : x
  2. Step 2: Convert to fraction form
    129,241.96/178,350.79 = 71,881.11/x
  3. Step 3: Cross multiply
    129,241.96x = 178,350.79 × 71,881.11
  4. Step 4: Simplify right side
    129,241.96x = 12,820,052,484.12
  5. Step 5: Solve for x
    x = 12,820,052,484.12/129,241.96
  6. Step 6: Final answer
    x = 99,194.20

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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.