Home / 143,315.28-214,972.86-49,821

Finding the Fourth Proportional to 143,315.28, 214,972.86 and 49,821

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Solution

The fourth proportional to 143,315.28, 214,972.86 and 49,821 is: 74,731.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,315.28 : 214,972.86 = 49,821 : x
  2. Step 2: Convert to fraction form
    143,315.28/214,972.86 = 49,821/x
  3. Step 3: Cross multiply
    143,315.28x = 214,972.86 × 49,821
  4. Step 4: Simplify right side
    143,315.28x = 10,710,162,858.06
  5. Step 5: Solve for x
    x = 10,710,162,858.06/143,315.28
  6. Step 6: Final answer
    x = 74,731.48

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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.