Home / 99,919.88-137,891.26-54,599.77

Finding the Fourth Proportional to 99,919.88, 137,891.26 and 54,599.77

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Solution

The fourth proportional to 99,919.88, 137,891.26 and 54,599.77 is: 75,348.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,919.88 : 137,891.26 = 54,599.77 : x
  2. Step 2: Convert to fraction form
    99,919.88/137,891.26 = 54,599.77/x
  3. Step 3: Cross multiply
    99,919.88x = 137,891.26 × 54,599.77
  4. Step 4: Simplify right side
    99,919.88x = 7,528,831,321.62
  5. Step 5: Solve for x
    x = 7,528,831,321.62/99,919.88
  6. Step 6: Final answer
    x = 75,348.68

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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.