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Finding the Fourth Proportional to 110,642.87, 166,029.93 and 103,637.64

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Solution

The fourth proportional to 110,642.87, 166,029.93 and 103,637.64 is: 155,517.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,642.87 : 166,029.93 = 103,637.64 : x
  2. Step 2: Convert to fraction form
    110,642.87/166,029.93 = 103,637.64/x
  3. Step 3: Cross multiply
    110,642.87x = 166,029.93 × 103,637.64
  4. Step 4: Simplify right side
    110,642.87x = 17,206,950,114.57
  5. Step 5: Solve for x
    x = 17,206,950,114.57/110,642.87
  6. Step 6: Final answer
    x = 155,517.94

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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.