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Finding the Fourth Proportional to 185,662.10, 278,493.15 and 45,420.73

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Solution

The fourth proportional to 185,662.10, 278,493.15 and 45,420.73 is: 68,131.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,662.10 : 278,493.15 = 45,420.73 : x
  2. Step 2: Convert to fraction form
    185,662.10/278,493.15 = 45,420.73/x
  3. Step 3: Cross multiply
    185,662.10x = 278,493.15 × 45,420.73
  4. Step 4: Simplify right side
    185,662.10x = 12,649,360,780.53
  5. Step 5: Solve for x
    x = 12,649,360,780.53/185,662.10
  6. Step 6: Final answer
    x = 68,131.09

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1.5x scale

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.