Home / 115,771.14-159,759.81-65,471.22

Finding the Fourth Proportional to 115,771.14, 159,759.81 and 65,471.22

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Solution

The fourth proportional to 115,771.14, 159,759.81 and 65,471.22 is: 90,347.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,771.14 : 159,759.81 = 65,471.22 : x
  2. Step 2: Convert to fraction form
    115,771.14/159,759.81 = 65,471.22/x
  3. Step 3: Cross multiply
    115,771.14x = 159,759.81 × 65,471.22
  4. Step 4: Simplify right side
    115,771.14x = 10,459,669,667.67
  5. Step 5: Solve for x
    x = 10,459,669,667.67/115,771.14
  6. Step 6: Final answer
    x = 90,347.82

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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.