Home / 128,241.11-192,072.69-61,731.20

Finding the Fourth Proportional to 128,241.11, 192,072.69 and 61,731.20

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Solution

The fourth proportional to 128,241.11, 192,072.69 and 61,731.20 is: 92,457.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,241.11 : 192,072.69 = 61,731.20 : x
  2. Step 2: Convert to fraction form
    128,241.11/192,072.69 = 61,731.20/x
  3. Step 3: Cross multiply
    128,241.11x = 192,072.69 × 61,731.20
  4. Step 4: Simplify right side
    128,241.11x = 11,856,876,680.56
  5. Step 5: Solve for x
    x = 11,856,876,680.56/128,241.11
  6. Step 6: Final answer
    x = 92,457.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.