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Finding the Fourth Proportional to 143,158.20, 214,761.60 and 43,317.60

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Solution

The fourth proportional to 143,158.20, 214,761.60 and 43,317.60 is: 64,983.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,158.20 : 214,761.60 = 43,317.60 : x
  2. Step 2: Convert to fraction form
    143,158.20/214,761.60 = 43,317.60/x
  3. Step 3: Cross multiply
    143,158.20x = 214,761.60 × 43,317.60
  4. Step 4: Simplify right side
    143,158.20x = 9,302,957,084.16
  5. Step 5: Solve for x
    x = 9,302,957,084.16/143,158.20
  6. Step 6: Final answer
    x = 64,983.75

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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.