Home / 115,396.32-159,272.56-75,039.84

Finding the Fourth Proportional to 115,396.32, 159,272.56 and 75,039.84

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Solution

The fourth proportional to 115,396.32, 159,272.56 and 75,039.84 is: 103,571.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,396.32 : 159,272.56 = 75,039.84 : x
  2. Step 2: Convert to fraction form
    115,396.32/159,272.56 = 75,039.84/x
  3. Step 3: Cross multiply
    115,396.32x = 159,272.56 × 75,039.84
  4. Step 4: Simplify right side
    115,396.32x = 11,951,787,418.79
  5. Step 5: Solve for x
    x = 11,951,787,418.79/115,396.32
  6. Step 6: Final answer
    x = 103,571.65

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1.5x scale

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.