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Finding the Fourth Proportional to 172,930.80, 259,472.44 and 73,159.84

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Solution

The fourth proportional to 172,930.80, 259,472.44 and 73,159.84 is: 109,772.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,930.80 : 259,472.44 = 73,159.84 : x
  2. Step 2: Convert to fraction form
    172,930.80/259,472.44 = 73,159.84/x
  3. Step 3: Cross multiply
    172,930.80x = 259,472.44 × 73,159.84
  4. Step 4: Simplify right side
    172,930.80x = 18,982,962,194.81
  5. Step 5: Solve for x
    x = 18,982,962,194.81/172,930.80
  6. Step 6: Final answer
    x = 109,772.01

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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.