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Finding the Fourth Proportional to 172,672.13, 259,043.33 and 72,832.68

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Solution

The fourth proportional to 172,672.13, 259,043.33 and 72,832.68 is: 109,263.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,672.13 : 259,043.33 = 72,832.68 : x
  2. Step 2: Convert to fraction form
    172,672.13/259,043.33 = 72,832.68/x
  3. Step 3: Cross multiply
    172,672.13x = 259,043.33 × 72,832.68
  4. Step 4: Simplify right side
    172,672.13x = 18,866,820,142.11
  5. Step 5: Solve for x
    x = 18,866,820,142.11/172,672.13
  6. Step 6: Final answer
    x = 109,263.84

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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.