Home / 143,165.88-214,731-76,535.28

Finding the Fourth Proportional to 143,165.88, 214,731 and 76,535.28

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Solution

The fourth proportional to 143,165.88, 214,731 and 76,535.28 is: 114,793.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,165.88 : 214,731 = 76,535.28 : x
  2. Step 2: Convert to fraction form
    143,165.88/214,731 = 76,535.28/x
  3. Step 3: Cross multiply
    143,165.88x = 214,731 × 76,535.28
  4. Step 4: Simplify right side
    143,165.88x = 16,434,497,209.68
  5. Step 5: Solve for x
    x = 16,434,497,209.68/143,165.88
  6. Step 6: Final answer
    x = 114,793.39

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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.