Home / 115,712.83-159,638.07-72,667

Finding the Fourth Proportional to 115,712.83, 159,638.07 and 72,667

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Solution

The fourth proportional to 115,712.83, 159,638.07 and 72,667 is: 100,251.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,712.83 : 159,638.07 = 72,667 : x
  2. Step 2: Convert to fraction form
    115,712.83/159,638.07 = 72,667/x
  3. Step 3: Cross multiply
    115,712.83x = 159,638.07 × 72,667
  4. Step 4: Simplify right side
    115,712.83x = 11,600,419,632.69
  5. Step 5: Solve for x
    x = 11,600,419,632.69/115,712.83
  6. Step 6: Final answer
    x = 100,251.80

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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.