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Finding the Fourth Proportional to 168,752.80, 253,056.30 and 84,480.40

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Solution

The fourth proportional to 168,752.80, 253,056.30 and 84,480.40 is: 126,684.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,752.80 : 253,056.30 = 84,480.40 : x
  2. Step 2: Convert to fraction form
    168,752.80/253,056.30 = 84,480.40/x
  3. Step 3: Cross multiply
    168,752.80x = 253,056.30 × 84,480.40
  4. Step 4: Simplify right side
    168,752.80x = 21,378,297,446.52
  5. Step 5: Solve for x
    x = 21,378,297,446.52/168,752.80
  6. Step 6: Final answer
    x = 126,684.11

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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.