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Finding the Fourth Proportional to 143,401.68, 214,472.88 and 127,717.20

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Solution

The fourth proportional to 143,401.68, 214,472.88 and 127,717.20 is: 191,015.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,401.68 : 214,472.88 = 127,717.20 : x
  2. Step 2: Convert to fraction form
    143,401.68/214,472.88 = 127,717.20/x
  3. Step 3: Cross multiply
    143,401.68x = 214,472.88 × 127,717.20
  4. Step 4: Simplify right side
    143,401.68x = 27,391,875,709.54
  5. Step 5: Solve for x
    x = 27,391,875,709.54/143,401.68
  6. Step 6: Final answer
    x = 191,015.03

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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.