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Finding the Fourth Proportional to 201,251.55, 301,931.77 and 68,131.82

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Solution

The fourth proportional to 201,251.55, 301,931.77 and 68,131.82 is: 102,216.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,251.55 : 301,931.77 = 68,131.82 : x
  2. Step 2: Convert to fraction form
    201,251.55/301,931.77 = 68,131.82/x
  3. Step 3: Cross multiply
    201,251.55x = 301,931.77 × 68,131.82
  4. Step 4: Simplify right side
    201,251.55x = 20,571,161,005.92
  5. Step 5: Solve for x
    x = 20,571,161,005.92/201,251.55
  6. Step 6: Final answer
    x = 102,216.16

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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.