Home / 143,125.31-214,355.76-138,143.20

Finding the Fourth Proportional to 143,125.31, 214,355.76 and 138,143.20

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Solution

The fourth proportional to 143,125.31, 214,355.76 and 138,143.20 is: 206,894.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,125.31 : 214,355.76 = 138,143.20 : x
  2. Step 2: Convert to fraction form
    143,125.31/214,355.76 = 138,143.20/x
  3. Step 3: Cross multiply
    143,125.31x = 214,355.76 × 138,143.20
  4. Step 4: Simplify right side
    143,125.31x = 29,611,790,624.83
  5. Step 5: Solve for x
    x = 29,611,790,624.83/143,125.31
  6. Step 6: Final answer
    x = 206,894.16

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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.