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Finding the Fourth Proportional to 185,909.04, 278,813.75 and 80,703

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Solution

The fourth proportional to 185,909.04, 278,813.75 and 80,703 is: 121,032.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,909.04 : 278,813.75 = 80,703 : x
  2. Step 2: Convert to fraction form
    185,909.04/278,813.75 = 80,703/x
  3. Step 3: Cross multiply
    185,909.04x = 278,813.75 × 80,703
  4. Step 4: Simplify right side
    185,909.04x = 22,501,105,662.74
  5. Step 5: Solve for x
    x = 22,501,105,662.74/185,909.04
  6. Step 6: Final answer
    x = 121,032.88

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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.