Home / 107,961.96-149,048.51-71,725.60

Finding the Fourth Proportional to 107,961.96, 149,048.51 and 71,725.60

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Solution

The fourth proportional to 107,961.96, 149,048.51 and 71,725.60 is: 99,021.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,961.96 : 149,048.51 = 71,725.60 : x
  2. Step 2: Convert to fraction form
    107,961.96/149,048.51 = 71,725.60/x
  3. Step 3: Cross multiply
    107,961.96x = 149,048.51 × 71,725.60
  4. Step 4: Simplify right side
    107,961.96x = 10,690,593,636.54
  5. Step 5: Solve for x
    x = 10,690,593,636.54/107,961.96
  6. Step 6: Final answer
    x = 99,021.85

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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.