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Finding the Fourth Proportional to 101,170.20, 151,409.70 and 88,728.60

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Solution

The fourth proportional to 101,170.20, 151,409.70 and 88,728.60 is: 132,789.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,170.20 : 151,409.70 = 88,728.60 : x
  2. Step 2: Convert to fraction form
    101,170.20/151,409.70 = 88,728.60/x
  3. Step 3: Cross multiply
    101,170.20x = 151,409.70 × 88,728.60
  4. Step 4: Simplify right side
    101,170.20x = 13,434,370,707.42
  5. Step 5: Solve for x
    x = 13,434,370,707.42/101,170.20
  6. Step 6: Final answer
    x = 132,789.80

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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.