Home / 115,067.99-158,812.75-72,063.78

Finding the Fourth Proportional to 115,067.99, 158,812.75 and 72,063.78

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Solution

The fourth proportional to 115,067.99, 158,812.75 and 72,063.78 is: 99,459.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,067.99 : 158,812.75 = 72,063.78 : x
  2. Step 2: Convert to fraction form
    115,067.99/158,812.75 = 72,063.78/x
  3. Step 3: Cross multiply
    115,067.99x = 158,812.75 × 72,063.78
  4. Step 4: Simplify right side
    115,067.99x = 11,444,646,571.73
  5. Step 5: Solve for x
    x = 11,444,646,571.73/115,067.99
  6. Step 6: Final answer
    x = 99,459.86

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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.