Home / 143,440.59-214,936.01-90,738.75

Finding the Fourth Proportional to 143,440.59, 214,936.01 and 90,738.75

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Solution

The fourth proportional to 143,440.59, 214,936.01 and 90,738.75 is: 135,965.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,440.59 : 214,936.01 = 90,738.75 : x
  2. Step 2: Convert to fraction form
    143,440.59/214,936.01 = 90,738.75/x
  3. Step 3: Cross multiply
    143,440.59x = 214,936.01 × 90,738.75
  4. Step 4: Simplify right side
    143,440.59x = 19,503,024,423.69
  5. Step 5: Solve for x
    x = 19,503,024,423.69/143,440.59
  6. Step 6: Final answer
    x = 135,965.87

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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.