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Finding the Fourth Proportional to 185,563.30, 278,344.95 and 80,587.30

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Solution

The fourth proportional to 185,563.30, 278,344.95 and 80,587.30 is: 120,880.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,563.30 : 278,344.95 = 80,587.30 : x
  2. Step 2: Convert to fraction form
    185,563.30/278,344.95 = 80,587.30/x
  3. Step 3: Cross multiply
    185,563.30x = 278,344.95 × 80,587.30
  4. Step 4: Simplify right side
    185,563.30x = 22,431,067,989.14
  5. Step 5: Solve for x
    x = 22,431,067,989.14/185,563.30
  6. Step 6: Final answer
    x = 120,880.95

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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.