Home / 99,575.12-149,362.68-81,974.36

Finding the Fourth Proportional to 99,575.12, 149,362.68 and 81,974.36

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Solution

The fourth proportional to 99,575.12, 149,362.68 and 81,974.36 is: 122,961.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,575.12 : 149,362.68 = 81,974.36 : x
  2. Step 2: Convert to fraction form
    99,575.12/149,362.68 = 81,974.36/x
  3. Step 3: Cross multiply
    99,575.12x = 149,362.68 × 81,974.36
  4. Step 4: Simplify right side
    99,575.12x = 12,243,910,100.88
  5. Step 5: Solve for x
    x = 12,243,910,100.88/99,575.12
  6. Step 6: Final answer
    x = 122,961.54

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1.5x scale

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.