Home / 143,428.31-215,147.02-43,589.37

Finding the Fourth Proportional to 143,428.31, 215,147.02 and 43,589.37

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Solution

The fourth proportional to 143,428.31, 215,147.02 and 43,589.37 is: 65,385.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,428.31 : 215,147.02 = 43,589.37 : x
  2. Step 2: Convert to fraction form
    143,428.31/215,147.02 = 43,589.37/x
  3. Step 3: Cross multiply
    143,428.31x = 215,147.02 × 43,589.37
  4. Step 4: Simplify right side
    143,428.31x = 9,378,123,059.18
  5. Step 5: Solve for x
    x = 9,378,123,059.18/143,428.31
  6. Step 6: Final answer
    x = 65,385.44

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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.