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Finding the Fourth Proportional to 168,752.80, 253,129.20 and 68,847.40

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Solution

The fourth proportional to 168,752.80, 253,129.20 and 68,847.40 is: 103,271.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,752.80 : 253,129.20 = 68,847.40 : x
  2. Step 2: Convert to fraction form
    168,752.80/253,129.20 = 68,847.40/x
  3. Step 3: Cross multiply
    168,752.80x = 253,129.20 × 68,847.40
  4. Step 4: Simplify right side
    168,752.80x = 17,427,287,284.08
  5. Step 5: Solve for x
    x = 17,427,287,284.08/168,752.80
  6. Step 6: Final answer
    x = 103,271.10

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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.