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Finding the Fourth Proportional to 88,716.60, 133,074.90 and 87,258.60

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Solution

The fourth proportional to 88,716.60, 133,074.90 and 87,258.60 is: 130,887.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,716.60 : 133,074.90 = 87,258.60 : x
  2. Step 2: Convert to fraction form
    88,716.60/133,074.90 = 87,258.60/x
  3. Step 3: Cross multiply
    88,716.60x = 133,074.90 × 87,258.60
  4. Step 4: Simplify right side
    88,716.60x = 11,611,929,469.14
  5. Step 5: Solve for x
    x = 11,611,929,469.14/88,716.60
  6. Step 6: Final answer
    x = 130,887.90

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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.