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Finding the Fourth Proportional to 173,843.80, 260,688.90 and 80,378.20

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Solution

The fourth proportional to 173,843.80, 260,688.90 and 80,378.20 is: 120,531.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,843.80 : 260,688.90 = 80,378.20 : x
  2. Step 2: Convert to fraction form
    173,843.80/260,688.90 = 80,378.20/x
  3. Step 3: Cross multiply
    173,843.80x = 260,688.90 × 80,378.20
  4. Step 4: Simplify right side
    173,843.80x = 20,953,704,541.98
  5. Step 5: Solve for x
    x = 20,953,704,541.98/173,843.80
  6. Step 6: Final answer
    x = 120,531.79

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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.