Home / 143,163.20-214,917.60-142,126.40

Finding the Fourth Proportional to 143,163.20, 214,917.60 and 142,126.40

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Solution

The fourth proportional to 143,163.20, 214,917.60 and 142,126.40 is: 213,361.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,163.20 : 214,917.60 = 142,126.40 : x
  2. Step 2: Convert to fraction form
    143,163.20/214,917.60 = 142,126.40/x
  3. Step 3: Cross multiply
    143,163.20x = 214,917.60 × 142,126.40
  4. Step 4: Simplify right side
    143,163.20x = 30,545,464,784.64
  5. Step 5: Solve for x
    x = 30,545,464,784.64/143,163.20
  6. Step 6: Final answer
    x = 213,361.15

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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.