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Finding the Fourth Proportional to 202,643.75, 279,650.45 and 110,765.66

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Solution

The fourth proportional to 202,643.75, 279,650.45 and 110,765.66 is: 152,857.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,643.75 : 279,650.45 = 110,765.66 : x
  2. Step 2: Convert to fraction form
    202,643.75/279,650.45 = 110,765.66/x
  3. Step 3: Cross multiply
    202,643.75x = 279,650.45 × 110,765.66
  4. Step 4: Simplify right side
    202,643.75x = 30,975,667,639.59
  5. Step 5: Solve for x
    x = 30,975,667,639.59/202,643.75
  6. Step 6: Final answer
    x = 152,857.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.