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Finding the Fourth Proportional to 185,418.60, 278,200.80 and 73,079.70

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Solution

The fourth proportional to 185,418.60, 278,200.80 and 73,079.70 is: 109,648.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,418.60 : 278,200.80 = 73,079.70 : x
  2. Step 2: Convert to fraction form
    185,418.60/278,200.80 = 73,079.70/x
  3. Step 3: Cross multiply
    185,418.60x = 278,200.80 × 73,079.70
  4. Step 4: Simplify right side
    185,418.60x = 20,330,831,003.76
  5. Step 5: Solve for x
    x = 20,330,831,003.76/185,418.60
  6. Step 6: Final answer
    x = 109,648.28

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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.