Home / 128,577.14-192,791.82-68,531.66

Finding the Fourth Proportional to 128,577.14, 192,791.82 and 68,531.66

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Solution

The fourth proportional to 128,577.14, 192,791.82 and 68,531.66 is: 102,758.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,577.14 : 192,791.82 = 68,531.66 : x
  2. Step 2: Convert to fraction form
    128,577.14/192,791.82 = 68,531.66/x
  3. Step 3: Cross multiply
    128,577.14x = 192,791.82 × 68,531.66
  4. Step 4: Simplify right side
    128,577.14x = 13,212,343,459.02
  5. Step 5: Solve for x
    x = 13,212,343,459.02/128,577.14
  6. Step 6: Final answer
    x = 102,758.11

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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.