Home / 99,665.62-149,350.80-82,021.58

Finding the Fourth Proportional to 99,665.62, 149,350.80 and 82,021.58

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Solution

The fourth proportional to 99,665.62, 149,350.80 and 82,021.58 is: 122,910.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,665.62 : 149,350.80 = 82,021.58 : x
  2. Step 2: Convert to fraction form
    99,665.62/149,350.80 = 82,021.58/x
  3. Step 3: Cross multiply
    99,665.62x = 149,350.80 × 82,021.58
  4. Step 4: Simplify right side
    99,665.62x = 12,249,988,590.26
  5. Step 5: Solve for x
    x = 12,249,988,590.26/99,665.62
  6. Step 6: Final answer
    x = 122,910.88

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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.