Home / 143,149.11-214,722.29-87,004.71

Finding the Fourth Proportional to 143,149.11, 214,722.29 and 87,004.71

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Solution

The fourth proportional to 143,149.11, 214,722.29 and 87,004.71 is: 130,506.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,149.11 : 214,722.29 = 87,004.71 : x
  2. Step 2: Convert to fraction form
    143,149.11/214,722.29 = 87,004.71/x
  3. Step 3: Cross multiply
    143,149.11x = 214,722.29 × 87,004.71
  4. Step 4: Simplify right side
    143,149.11x = 18,681,850,571.99
  5. Step 5: Solve for x
    x = 18,681,850,571.99/143,149.11
  6. Step 6: Final answer
    x = 130,506.23

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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.