Home / 172,502.19-258,665.74-78,927.75

Finding the Fourth Proportional to 172,502.19, 258,665.74 and 78,927.75

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Solution

The fourth proportional to 172,502.19, 258,665.74 and 78,927.75 is: 118,351.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,502.19 : 258,665.74 = 78,927.75 : x
  2. Step 2: Convert to fraction form
    172,502.19/258,665.74 = 78,927.75/x
  3. Step 3: Cross multiply
    172,502.19x = 258,665.74 × 78,927.75
  4. Step 4: Simplify right side
    172,502.19x = 20,415,904,662.97
  5. Step 5: Solve for x
    x = 20,415,904,662.97/172,502.19
  6. Step 6: Final answer
    x = 118,351.57

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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.