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Finding the Fourth Proportional to 168,816.80, 253,225.20 and 68,911.40

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Solution

The fourth proportional to 168,816.80, 253,225.20 and 68,911.40 is: 103,367.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,816.80 : 253,225.20 = 68,911.40 : x
  2. Step 2: Convert to fraction form
    168,816.80/253,225.20 = 68,911.40/x
  3. Step 3: Cross multiply
    168,816.80x = 253,225.20 × 68,911.40
  4. Step 4: Simplify right side
    168,816.80x = 17,450,103,047.28
  5. Step 5: Solve for x
    x = 17,450,103,047.28/168,816.80
  6. Step 6: Final answer
    x = 103,367.10

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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.