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Finding the Fourth Proportional to 185,880, 278,663.22 and 80,619.68

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Solution

The fourth proportional to 185,880, 278,663.22 and 80,619.68 is: 120,861.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,880 : 278,663.22 = 80,619.68 : x
  2. Step 2: Convert to fraction form
    185,880/278,663.22 = 80,619.68/x
  3. Step 3: Cross multiply
    185,880x = 278,663.22 × 80,619.68
  4. Step 4: Simplify right side
    185,880x = 22,465,739,624.17
  5. Step 5: Solve for x
    x = 22,465,739,624.17/185,880
  6. Step 6: Final answer
    x = 120,861.52

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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.