Home / 143,125.82-214,356.51-138,143.70

Finding the Fourth Proportional to 143,125.82, 214,356.51 and 138,143.70

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Solution

The fourth proportional to 143,125.82, 214,356.51 and 138,143.70 is: 206,894.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,125.82 : 214,356.51 = 138,143.70 : x
  2. Step 2: Convert to fraction form
    143,125.82/214,356.51 = 138,143.70/x
  3. Step 3: Cross multiply
    143,125.82x = 214,356.51 × 138,143.70
  4. Step 4: Simplify right side
    143,125.82x = 29,612,001,410.49
  5. Step 5: Solve for x
    x = 29,612,001,410.49/143,125.82
  6. Step 6: Final answer
    x = 206,894.90

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1.5x scale

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.