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Finding the Fourth Proportional to 143,310.15, 214,910.55 and 43,437.15

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Solution

The fourth proportional to 143,310.15, 214,910.55 and 43,437.15 is: 65,139.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,310.15 : 214,910.55 = 43,437.15 : x
  2. Step 2: Convert to fraction form
    143,310.15/214,910.55 = 43,437.15/x
  3. Step 3: Cross multiply
    143,310.15x = 214,910.55 × 43,437.15
  4. Step 4: Simplify right side
    143,310.15x = 9,335,101,796.93
  5. Step 5: Solve for x
    x = 9,335,101,796.93/143,310.15
  6. Step 6: Final answer
    x = 65,139.15

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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.