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Finding the Fourth Proportional to 143,151.70, 214,751.85 and 43,311.10

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Solution

The fourth proportional to 143,151.70, 214,751.85 and 43,311.10 is: 64,974.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,151.70 : 214,751.85 = 43,311.10 : x
  2. Step 2: Convert to fraction form
    143,151.70/214,751.85 = 43,311.10/x
  3. Step 3: Cross multiply
    143,151.70x = 214,751.85 × 43,311.10
  4. Step 4: Simplify right side
    143,151.70x = 9,301,138,850.54
  5. Step 5: Solve for x
    x = 9,301,138,850.54/143,151.70
  6. Step 6: Final answer
    x = 64,974.00

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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.