Home / 153,242.28-229,371.75-81,986.67

Finding the Fourth Proportional to 153,242.28, 229,371.75 and 81,986.67

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Solution

The fourth proportional to 153,242.28, 229,371.75 and 81,986.67 is: 122,716.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,242.28 : 229,371.75 = 81,986.67 : x
  2. Step 2: Convert to fraction form
    153,242.28/229,371.75 = 81,986.67/x
  3. Step 3: Cross multiply
    153,242.28x = 229,371.75 × 81,986.67
  4. Step 4: Simplify right side
    153,242.28x = 18,805,425,974.57
  5. Step 5: Solve for x
    x = 18,805,425,974.57/153,242.28
  6. Step 6: Final answer
    x = 122,716.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.