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Finding the Fourth Proportional to 168,846.50, 253,357.24 and 85,740.50

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Solution

The fourth proportional to 168,846.50, 253,357.24 and 85,740.50 is: 128,655.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,846.50 : 253,357.24 = 85,740.50 : x
  2. Step 2: Convert to fraction form
    168,846.50/253,357.24 = 85,740.50/x
  3. Step 3: Cross multiply
    168,846.50x = 253,357.24 × 85,740.50
  4. Step 4: Simplify right side
    168,846.50x = 21,722,976,436.22
  5. Step 5: Solve for x
    x = 21,722,976,436.22/168,846.50
  6. Step 6: Final answer
    x = 128,655.18

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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.