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Finding the Fourth Proportional to 131,687.87, 197,563.25 and 42,941.45

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Solution

The fourth proportional to 131,687.87, 197,563.25 and 42,941.45 is: 64,422.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,687.87 : 197,563.25 = 42,941.45 : x
  2. Step 2: Convert to fraction form
    131,687.87/197,563.25 = 42,941.45/x
  3. Step 3: Cross multiply
    131,687.87x = 197,563.25 × 42,941.45
  4. Step 4: Simplify right side
    131,687.87x = 8,483,653,022.97
  5. Step 5: Solve for x
    x = 8,483,653,022.97/131,687.87
  6. Step 6: Final answer
    x = 64,422.44

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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.