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Finding the Fourth Proportional to 185,879.93, 278,663.15 and 80,619.62

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Solution

The fourth proportional to 185,879.93, 278,663.15 and 80,619.62 is: 120,861.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,879.93 : 278,663.15 = 80,619.62 : x
  2. Step 2: Convert to fraction form
    185,879.93/278,663.15 = 80,619.62/x
  3. Step 3: Cross multiply
    185,879.93x = 278,663.15 × 80,619.62
  4. Step 4: Simplify right side
    185,879.93x = 22,465,716,069.24
  5. Step 5: Solve for x
    x = 22,465,716,069.24/185,879.93
  6. Step 6: Final answer
    x = 120,861.44

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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.