Home / 172,579.60-258,899.80-71,377.36

Finding the Fourth Proportional to 172,579.60, 258,899.80 and 71,377.36

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Solution

The fourth proportional to 172,579.60, 258,899.80 and 71,377.36 is: 107,078.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,579.60 : 258,899.80 = 71,377.36 : x
  2. Step 2: Convert to fraction form
    172,579.60/258,899.80 = 71,377.36/x
  3. Step 3: Cross multiply
    172,579.60x = 258,899.80 × 71,377.36
  4. Step 4: Simplify right side
    172,579.60x = 18,479,584,228.53
  5. Step 5: Solve for x
    x = 18,479,584,228.53/172,579.60
  6. Step 6: Final answer
    x = 107,078.61

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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.