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Finding the Fourth Proportional to 173,871.80, 260,730.90 and 80,406.20

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Solution

The fourth proportional to 173,871.80, 260,730.90 and 80,406.20 is: 120,573.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,871.80 : 260,730.90 = 80,406.20 : x
  2. Step 2: Convert to fraction form
    173,871.80/260,730.90 = 80,406.20/x
  3. Step 3: Cross multiply
    173,871.80x = 260,730.90 × 80,406.20
  4. Step 4: Simplify right side
    173,871.80x = 20,964,380,891.58
  5. Step 5: Solve for x
    x = 20,964,380,891.58/173,871.80
  6. Step 6: Final answer
    x = 120,573.78

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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.