Home / 99,921.77-149,614.07-76,115.91

Finding the Fourth Proportional to 99,921.77, 149,614.07 and 76,115.91

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Solution

The fourth proportional to 99,921.77, 149,614.07 and 76,115.91 is: 113,969.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,921.77 : 149,614.07 = 76,115.91 : x
  2. Step 2: Convert to fraction form
    99,921.77/149,614.07 = 76,115.91/x
  3. Step 3: Cross multiply
    99,921.77x = 149,614.07 × 76,115.91
  4. Step 4: Simplify right side
    99,921.77x = 11,388,010,359.30
  5. Step 5: Solve for x
    x = 11,388,010,359.30/99,921.77
  6. Step 6: Final answer
    x = 113,969.26

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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.