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Finding the Fourth Proportional to 172,732.59, 258,901.92 and 79,041.51

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Solution

The fourth proportional to 172,732.59, 258,901.92 and 79,041.51 is: 118,472.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,732.59 : 258,901.92 = 79,041.51 : x
  2. Step 2: Convert to fraction form
    172,732.59/258,901.92 = 79,041.51/x
  3. Step 3: Cross multiply
    172,732.59x = 258,901.92 × 79,041.51
  4. Step 4: Simplify right side
    172,732.59x = 20,463,998,698.70
  5. Step 5: Solve for x
    x = 20,463,998,698.70/172,732.59
  6. Step 6: Final answer
    x = 118,472.13

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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.