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Finding the Fourth Proportional to 168,783.80, 253,272.90 and 63,678.20

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Solution

The fourth proportional to 168,783.80, 253,272.90 and 63,678.20 is: 95,553.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,783.80 : 253,272.90 = 63,678.20 : x
  2. Step 2: Convert to fraction form
    168,783.80/253,272.90 = 63,678.20/x
  3. Step 3: Cross multiply
    168,783.80x = 253,272.90 × 63,678.20
  4. Step 4: Simplify right side
    168,783.80x = 16,127,962,380.78
  5. Step 5: Solve for x
    x = 16,127,962,380.78/168,783.80
  6. Step 6: Final answer
    x = 95,553.97

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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.