Home / 172,478.40-258,744.96-54,123.36

Finding the Fourth Proportional to 172,478.40, 258,744.96 and 54,123.36

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Solution

The fourth proportional to 172,478.40, 258,744.96 and 54,123.36 is: 81,193.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,478.40 : 258,744.96 = 54,123.36 : x
  2. Step 2: Convert to fraction form
    172,478.40/258,744.96 = 54,123.36/x
  3. Step 3: Cross multiply
    172,478.40x = 258,744.96 × 54,123.36
  4. Step 4: Simplify right side
    172,478.40x = 14,004,146,618.27
  5. Step 5: Solve for x
    x = 14,004,146,618.27/172,478.40
  6. Step 6: Final answer
    x = 81,193.63

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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.