Home / 172,118.19-258,278.33-72,270.70

Finding the Fourth Proportional to 172,118.19, 258,278.33 and 72,270.70

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Solution

The fourth proportional to 172,118.19, 258,278.33 and 72,270.70 is: 108,448.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,118.19 : 258,278.33 = 72,270.70 : x
  2. Step 2: Convert to fraction form
    172,118.19/258,278.33 = 72,270.70/x
  3. Step 3: Cross multiply
    172,118.19x = 258,278.33 × 72,270.70
  4. Step 4: Simplify right side
    172,118.19x = 18,665,955,703.93
  5. Step 5: Solve for x
    x = 18,665,955,703.93/172,118.19
  6. Step 6: Final answer
    x = 108,448.48

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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.