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Finding the Fourth Proportional to 172,153.64, 258,229.90 and 45,793.72

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Solution

The fourth proportional to 172,153.64, 258,229.90 and 45,793.72 is: 68,690.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,153.64 : 258,229.90 = 45,793.72 : x
  2. Step 2: Convert to fraction form
    172,153.64/258,229.90 = 45,793.72/x
  3. Step 3: Cross multiply
    172,153.64x = 258,229.90 × 45,793.72
  4. Step 4: Simplify right side
    172,153.64x = 11,825,307,736.23
  5. Step 5: Solve for x
    x = 11,825,307,736.23/172,153.64
  6. Step 6: Final answer
    x = 68,690.43

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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.