Home / 103,940.68-143,428.04-58,625.76

Finding the Fourth Proportional to 103,940.68, 143,428.04 and 58,625.76

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Solution

The fourth proportional to 103,940.68, 143,428.04 and 58,625.76 is: 80,897.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,940.68 : 143,428.04 = 58,625.76 : x
  2. Step 2: Convert to fraction form
    103,940.68/143,428.04 = 58,625.76/x
  3. Step 3: Cross multiply
    103,940.68x = 143,428.04 × 58,625.76
  4. Step 4: Simplify right side
    103,940.68x = 8,408,577,850.31
  5. Step 5: Solve for x
    x = 8,408,577,850.31/103,940.68
  6. Step 6: Final answer
    x = 80,897.85

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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.