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Finding the Fourth Proportional to 88,873.20, 122,536.80 and 83,721.60

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Solution

The fourth proportional to 88,873.20, 122,536.80 and 83,721.60 is: 115,433.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,873.20 : 122,536.80 = 83,721.60 : x
  2. Step 2: Convert to fraction form
    88,873.20/122,536.80 = 83,721.60/x
  3. Step 3: Cross multiply
    88,873.20x = 122,536.80 × 83,721.60
  4. Step 4: Simplify right side
    88,873.20x = 10,258,976,954.88
  5. Step 5: Solve for x
    x = 10,258,976,954.88/88,873.20
  6. Step 6: Final answer
    x = 115,433.86

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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.