Home / 99,719.36-137,612.18-54,396.60

Finding the Fourth Proportional to 99,719.36, 137,612.18 and 54,396.60

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Solution

The fourth proportional to 99,719.36, 137,612.18 and 54,396.60 is: 75,067.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,719.36 : 137,612.18 = 54,396.60 : x
  2. Step 2: Convert to fraction form
    99,719.36/137,612.18 = 54,396.60/x
  3. Step 3: Cross multiply
    99,719.36x = 137,612.18 × 54,396.60
  4. Step 4: Simplify right side
    99,719.36x = 7,485,634,710.59
  5. Step 5: Solve for x
    x = 7,485,634,710.59/99,719.36
  6. Step 6: Final answer
    x = 75,067.02

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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.