Home / 158,085.30-218,163.33-90,112.53

Finding the Fourth Proportional to 158,085.30, 218,163.33 and 90,112.53

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Solution

The fourth proportional to 158,085.30, 218,163.33 and 90,112.53 is: 124,358.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,085.30 : 218,163.33 = 90,112.53 : x
  2. Step 2: Convert to fraction form
    158,085.30/218,163.33 = 90,112.53/x
  3. Step 3: Cross multiply
    158,085.30x = 218,163.33 × 90,112.53
  4. Step 4: Simplify right side
    158,085.30x = 19,659,249,619.52
  5. Step 5: Solve for x
    x = 19,659,249,619.52/158,085.30
  6. Step 6: Final answer
    x = 124,358.49

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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.