Home / 138,450.53-191,061.82-74,788.35

Finding the Fourth Proportional to 138,450.53, 191,061.82 and 74,788.35

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Solution

The fourth proportional to 138,450.53, 191,061.82 and 74,788.35 is: 103,207.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,450.53 : 191,061.82 = 74,788.35 : x
  2. Step 2: Convert to fraction form
    138,450.53/191,061.82 = 74,788.35/x
  3. Step 3: Cross multiply
    138,450.53x = 191,061.82 × 74,788.35
  4. Step 4: Simplify right side
    138,450.53x = 14,289,198,265.80
  5. Step 5: Solve for x
    x = 14,289,198,265.80/138,450.53
  6. Step 6: Final answer
    x = 103,207.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.