Home / 100,199.12-149,563.30-88,388.56

Finding the Fourth Proportional to 100,199.12, 149,563.30 and 88,388.56

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Solution

The fourth proportional to 100,199.12, 149,563.30 and 88,388.56 is: 131,934.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,199.12 : 149,563.30 = 88,388.56 : x
  2. Step 2: Convert to fraction form
    100,199.12/149,563.30 = 88,388.56/x
  3. Step 3: Cross multiply
    100,199.12x = 149,563.30 × 88,388.56
  4. Step 4: Simplify right side
    100,199.12x = 13,219,684,715.85
  5. Step 5: Solve for x
    x = 13,219,684,715.85/100,199.12
  6. Step 6: Final answer
    x = 131,934.14

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.