Home / 89,900.12-124,115.82-79,936.76

Finding the Fourth Proportional to 89,900.12, 124,115.82 and 79,936.76

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Solution

The fourth proportional to 89,900.12, 124,115.82 and 79,936.76 is: 110,360.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,900.12 : 124,115.82 = 79,936.76 : x
  2. Step 2: Convert to fraction form
    89,900.12/124,115.82 = 79,936.76/x
  3. Step 3: Cross multiply
    89,900.12x = 124,115.82 × 79,936.76
  4. Step 4: Simplify right side
    89,900.12x = 9,921,416,515.54
  5. Step 5: Solve for x
    x = 9,921,416,515.54/89,900.12
  6. Step 6: Final answer
    x = 110,360.44

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1.5x scale

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.