Home / 90,763.44-136,044.27-68,504.64

Finding the Fourth Proportional to 90,763.44, 136,044.27 and 68,504.64

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Solution

The fourth proportional to 90,763.44, 136,044.27 and 68,504.64 is: 102,680.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,763.44 : 136,044.27 = 68,504.64 : x
  2. Step 2: Convert to fraction form
    90,763.44/136,044.27 = 68,504.64/x
  3. Step 3: Cross multiply
    90,763.44x = 136,044.27 × 68,504.64
  4. Step 4: Simplify right side
    90,763.44x = 9,319,663,740.41
  5. Step 5: Solve for x
    x = 9,319,663,740.41/90,763.44
  6. Step 6: Final answer
    x = 102,680.81

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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.