Home / 115,491.33-159,323.22-72,449.55

Finding the Fourth Proportional to 115,491.33, 159,323.22 and 72,449.55

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Solution

The fourth proportional to 115,491.33, 159,323.22 and 72,449.55 is: 99,945.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,491.33 : 159,323.22 = 72,449.55 : x
  2. Step 2: Convert to fraction form
    115,491.33/159,323.22 = 72,449.55/x
  3. Step 3: Cross multiply
    115,491.33x = 159,323.22 × 72,449.55
  4. Step 4: Simplify right side
    115,491.33x = 11,542,895,593.55
  5. Step 5: Solve for x
    x = 11,542,895,593.55/115,491.33
  6. Step 6: Final answer
    x = 99,945.99

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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.