Home / 103,621.96-155,432.92-68,553.41

Finding the Fourth Proportional to 103,621.96, 155,432.92 and 68,553.41

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Solution

The fourth proportional to 103,621.96, 155,432.92 and 68,553.41 is: 102,830.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,621.96 : 155,432.92 = 68,553.41 : x
  2. Step 2: Convert to fraction form
    103,621.96/155,432.92 = 68,553.41/x
  3. Step 3: Cross multiply
    103,621.96x = 155,432.92 × 68,553.41
  4. Step 4: Simplify right side
    103,621.96x = 10,655,456,692.26
  5. Step 5: Solve for x
    x = 10,655,456,692.26/103,621.96
  6. Step 6: Final answer
    x = 102,830.10

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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.