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Finding the Fourth Proportional to 138,599.60, 207,996.60 and 88,800.80

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Solution

The fourth proportional to 138,599.60, 207,996.60 and 88,800.80 is: 133,263.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,599.60 : 207,996.60 = 88,800.80 : x
  2. Step 2: Convert to fraction form
    138,599.60/207,996.60 = 88,800.80/x
  3. Step 3: Cross multiply
    138,599.60x = 207,996.60 × 88,800.80
  4. Step 4: Simplify right side
    138,599.60x = 18,470,264,477.28
  5. Step 5: Solve for x
    x = 18,470,264,477.28/138,599.60
  6. Step 6: Final answer
    x = 133,263.48

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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.