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Finding the Fourth Proportional to 173,680.60, 260,520.90 and 85,107.10

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Solution

The fourth proportional to 173,680.60, 260,520.90 and 85,107.10 is: 127,660.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,680.60 : 260,520.90 = 85,107.10 : x
  2. Step 2: Convert to fraction form
    173,680.60/260,520.90 = 85,107.10/x
  3. Step 3: Cross multiply
    173,680.60x = 260,520.90 × 85,107.10
  4. Step 4: Simplify right side
    173,680.60x = 22,172,178,288.39
  5. Step 5: Solve for x
    x = 22,172,178,288.39/173,680.60
  6. Step 6: Final answer
    x = 127,660.65

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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.