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Finding the Fourth Proportional to 172,008.70, 257,912.07 and 52,029.55

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Solution

The fourth proportional to 172,008.70, 257,912.07 and 52,029.55 is: 78,013.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,008.70 : 257,912.07 = 52,029.55 : x
  2. Step 2: Convert to fraction form
    172,008.70/257,912.07 = 52,029.55/x
  3. Step 3: Cross multiply
    172,008.70x = 257,912.07 × 52,029.55
  4. Step 4: Simplify right side
    172,008.70x = 13,419,048,941.67
  5. Step 5: Solve for x
    x = 13,419,048,941.67/172,008.70
  6. Step 6: Final answer
    x = 78,013.78

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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.