Home / 143,126.31-214,357.26-138,144.20

Finding the Fourth Proportional to 143,126.31, 214,357.26 and 138,144.20

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Solution

The fourth proportional to 143,126.31, 214,357.26 and 138,144.20 is: 206,895.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,126.31 : 214,357.26 = 138,144.20 : x
  2. Step 2: Convert to fraction form
    143,126.31/214,357.26 = 138,144.20/x
  3. Step 3: Cross multiply
    143,126.31x = 214,357.26 × 138,144.20
  4. Step 4: Simplify right side
    143,126.31x = 29,612,212,196.89
  5. Step 5: Solve for x
    x = 29,612,212,196.89/143,126.31
  6. Step 6: Final answer
    x = 206,895.66

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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.