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Finding the Fourth Proportional to 102,392.80, 153,589.20 and 101,080.60

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Solution

The fourth proportional to 102,392.80, 153,589.20 and 101,080.60 is: 151,620.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,392.80 : 153,589.20 = 101,080.60 : x
  2. Step 2: Convert to fraction form
    102,392.80/153,589.20 = 101,080.60/x
  3. Step 3: Cross multiply
    102,392.80x = 153,589.20 × 101,080.60
  4. Step 4: Simplify right side
    102,392.80x = 15,524,888,489.52
  5. Step 5: Solve for x
    x = 15,524,888,489.52/102,392.80
  6. Step 6: Final answer
    x = 151,620.90

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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.