Home / 143,158.33-214,575.49-72,889.21

Finding the Fourth Proportional to 143,158.33, 214,575.49 and 72,889.21

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Solution

The fourth proportional to 143,158.33, 214,575.49 and 72,889.21 is: 109,251.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,158.33 : 214,575.49 = 72,889.21 : x
  2. Step 2: Convert to fraction form
    143,158.33/214,575.49 = 72,889.21/x
  3. Step 3: Cross multiply
    143,158.33x = 214,575.49 × 72,889.21
  4. Step 4: Simplify right side
    143,158.33x = 15,640,237,951.46
  5. Step 5: Solve for x
    x = 15,640,237,951.46/143,158.33
  6. Step 6: Final answer
    x = 109,251.33

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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.