Home / 135,516.78-187,013.49-75,086.94

Finding the Fourth Proportional to 135,516.78, 187,013.49 and 75,086.94

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Solution

The fourth proportional to 135,516.78, 187,013.49 and 75,086.94 is: 103,620.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,516.78 : 187,013.49 = 75,086.94 : x
  2. Step 2: Convert to fraction form
    135,516.78/187,013.49 = 75,086.94/x
  3. Step 3: Cross multiply
    135,516.78x = 187,013.49 × 75,086.94
  4. Step 4: Simplify right side
    135,516.78x = 14,042,270,702.82
  5. Step 5: Solve for x
    x = 14,042,270,702.82/135,516.78
  6. Step 6: Final answer
    x = 103,620.16

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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.