Home / 107,728.92-161,342.82-103,991.40

Finding the Fourth Proportional to 107,728.92, 161,342.82 and 103,991.40

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Solution

The fourth proportional to 107,728.92, 161,342.82 and 103,991.40 is: 155,745.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,728.92 : 161,342.82 = 103,991.40 : x
  2. Step 2: Convert to fraction form
    107,728.92/161,342.82 = 103,991.40/x
  3. Step 3: Cross multiply
    107,728.92x = 161,342.82 × 103,991.40
  4. Step 4: Simplify right side
    107,728.92x = 16,778,265,731.75
  5. Step 5: Solve for x
    x = 16,778,265,731.75/107,728.92
  6. Step 6: Final answer
    x = 155,745.23

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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.