Home / 103,143.41-154,685.09-39,949.43

Finding the Fourth Proportional to 103,143.41, 154,685.09 and 39,949.43

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Solution

The fourth proportional to 103,143.41, 154,685.09 and 39,949.43 is: 59,912.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,143.41 : 154,685.09 = 39,949.43 : x
  2. Step 2: Convert to fraction form
    103,143.41/154,685.09 = 39,949.43/x
  3. Step 3: Cross multiply
    103,143.41x = 154,685.09 × 39,949.43
  4. Step 4: Simplify right side
    103,143.41x = 6,179,581,999.63
  5. Step 5: Solve for x
    x = 6,179,581,999.63/103,143.41
  6. Step 6: Final answer
    x = 59,912.53

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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.