Home / 143,288.28-214,754.22-76,563.72

Finding the Fourth Proportional to 143,288.28, 214,754.22 and 76,563.72

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Solution

The fourth proportional to 143,288.28, 214,754.22 and 76,563.72 is: 114,750.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,288.28 : 214,754.22 = 76,563.72 : x
  2. Step 2: Convert to fraction form
    143,288.28/214,754.22 = 76,563.72/x
  3. Step 3: Cross multiply
    143,288.28x = 214,754.22 × 76,563.72
  4. Step 4: Simplify right side
    143,288.28x = 16,442,381,968.90
  5. Step 5: Solve for x
    x = 16,442,381,968.90/143,288.28
  6. Step 6: Final answer
    x = 114,750.36

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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.