Home / 143,338.87-215,067.54-72,223.50

Finding the Fourth Proportional to 143,338.87, 215,067.54 and 72,223.50

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Solution

The fourth proportional to 143,338.87, 215,067.54 and 72,223.50 is: 108,365.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,338.87 : 215,067.54 = 72,223.50 : x
  2. Step 2: Convert to fraction form
    143,338.87/215,067.54 = 72,223.50/x
  3. Step 3: Cross multiply
    143,338.87x = 215,067.54 × 72,223.50
  4. Step 4: Simplify right side
    143,338.87x = 15,532,930,475.19
  5. Step 5: Solve for x
    x = 15,532,930,475.19/143,338.87
  6. Step 6: Final answer
    x = 108,365.10

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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.