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Finding the Fourth Proportional to 99,716.88, 137,611.88 and 54,395.63

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Solution

The fourth proportional to 99,716.88, 137,611.88 and 54,395.63 is: 75,067.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,716.88 : 137,611.88 = 54,395.63 : x
  2. Step 2: Convert to fraction form
    99,716.88/137,611.88 = 54,395.63/x
  3. Step 3: Cross multiply
    99,716.88x = 137,611.88 × 54,395.63
  4. Step 4: Simplify right side
    99,716.88x = 7,485,484,356.01
  5. Step 5: Solve for x
    x = 7,485,484,356.01/99,716.88
  6. Step 6: Final answer
    x = 75,067.37

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1.5x scale

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.