Home / 143,389.22-215,112.56-80,299.08

Finding the Fourth Proportional to 143,389.22, 215,112.56 and 80,299.08

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Solution

The fourth proportional to 143,389.22, 215,112.56 and 80,299.08 is: 120,464.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,389.22 : 215,112.56 = 80,299.08 : x
  2. Step 2: Convert to fraction form
    143,389.22/215,112.56 = 80,299.08/x
  3. Step 3: Cross multiply
    143,389.22x = 215,112.56 × 80,299.08
  4. Step 4: Simplify right side
    143,389.22x = 17,273,340,262.95
  5. Step 5: Solve for x
    x = 17,273,340,262.95/143,389.22
  6. Step 6: Final answer
    x = 120,464.71

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1.5x scale

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.