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Finding the Fourth Proportional to 185,412.60, 278,191.80 and 73,073.70

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Solution

The fourth proportional to 185,412.60, 278,191.80 and 73,073.70 is: 109,639.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,412.60 : 278,191.80 = 73,073.70 : x
  2. Step 2: Convert to fraction form
    185,412.60/278,191.80 = 73,073.70/x
  3. Step 3: Cross multiply
    185,412.60x = 278,191.80 × 73,073.70
  4. Step 4: Simplify right side
    185,412.60x = 20,328,504,135.66
  5. Step 5: Solve for x
    x = 20,328,504,135.66/185,412.60
  6. Step 6: Final answer
    x = 109,639.28

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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.