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Finding the Fourth Proportional to 143,243.53, 214,791.38 and 64,290.20

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Solution

The fourth proportional to 143,243.53, 214,791.38 and 64,290.20 is: 96,402.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,243.53 : 214,791.38 = 64,290.20 : x
  2. Step 2: Convert to fraction form
    143,243.53/214,791.38 = 64,290.20/x
  3. Step 3: Cross multiply
    143,243.53x = 214,791.38 × 64,290.20
  4. Step 4: Simplify right side
    143,243.53x = 13,808,979,624.16
  5. Step 5: Solve for x
    x = 13,808,979,624.16/143,243.53
  6. Step 6: Final answer
    x = 96,402.12

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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.