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Finding the Fourth Proportional to 173,871.30, 260,730.15 and 80,405.70

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Solution

The fourth proportional to 173,871.30, 260,730.15 and 80,405.70 is: 120,573.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,871.30 : 260,730.15 = 80,405.70 : x
  2. Step 2: Convert to fraction form
    173,871.30/260,730.15 = 80,405.70/x
  3. Step 3: Cross multiply
    173,871.30x = 260,730.15 × 80,405.70
  4. Step 4: Simplify right side
    173,871.30x = 20,964,190,221.86
  5. Step 5: Solve for x
    x = 20,964,190,221.86/173,871.30
  6. Step 6: Final answer
    x = 120,573.03

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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.