Home / 90,761.94-136,042.02-68,503.14

Finding the Fourth Proportional to 90,761.94, 136,042.02 and 68,503.14

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Solution

The fourth proportional to 90,761.94, 136,042.02 and 68,503.14 is: 102,678.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,761.94 : 136,042.02 = 68,503.14 : x
  2. Step 2: Convert to fraction form
    90,761.94/136,042.02 = 68,503.14/x
  3. Step 3: Cross multiply
    90,761.94x = 136,042.02 × 68,503.14
  4. Step 4: Simplify right side
    90,761.94x = 9,319,305,541.94
  5. Step 5: Solve for x
    x = 9,319,305,541.94/90,761.94
  6. Step 6: Final answer
    x = 102,678.56

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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.