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Finding the Fourth Proportional to 185,425.20, 278,137.80 and 92,113.20

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Solution

The fourth proportional to 185,425.20, 278,137.80 and 92,113.20 is: 138,169.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,425.20 : 278,137.80 = 92,113.20 : x
  2. Step 2: Convert to fraction form
    185,425.20/278,137.80 = 92,113.20/x
  3. Step 3: Cross multiply
    185,425.20x = 278,137.80 × 92,113.20
  4. Step 4: Simplify right side
    185,425.20x = 25,620,162,798.96
  5. Step 5: Solve for x
    x = 25,620,162,798.96/185,425.20
  6. Step 6: Final answer
    x = 138,169.80

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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.