Home / 143,213.21-214,492.56-68,385.75

Finding the Fourth Proportional to 143,213.21, 214,492.56 and 68,385.75

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Solution

The fourth proportional to 143,213.21, 214,492.56 and 68,385.75 is: 102,422.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,213.21 : 214,492.56 = 68,385.75 : x
  2. Step 2: Convert to fraction form
    143,213.21/214,492.56 = 68,385.75/x
  3. Step 3: Cross multiply
    143,213.21x = 214,492.56 × 68,385.75
  4. Step 4: Simplify right side
    143,213.21x = 14,668,234,585.02
  5. Step 5: Solve for x
    x = 14,668,234,585.02/143,213.21
  6. Step 6: Final answer
    x = 102,422.36

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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.