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Finding the Fourth Proportional to 109,086.60, 163,629.90 and 88,350.60

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Solution

The fourth proportional to 109,086.60, 163,629.90 and 88,350.60 is: 132,525.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,086.60 : 163,629.90 = 88,350.60 : x
  2. Step 2: Convert to fraction form
    109,086.60/163,629.90 = 88,350.60/x
  3. Step 3: Cross multiply
    109,086.60x = 163,629.90 × 88,350.60
  4. Step 4: Simplify right side
    109,086.60x = 14,456,799,842.94
  5. Step 5: Solve for x
    x = 14,456,799,842.94/109,086.60
  6. Step 6: Final answer
    x = 132,525.90

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1.5x scale

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.