Home / 99,718.36-137,610.80-54,395.60

Finding the Fourth Proportional to 99,718.36, 137,610.80 and 54,395.60

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Solution

The fourth proportional to 99,718.36, 137,610.80 and 54,395.60 is: 75,065.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,718.36 : 137,610.80 = 54,395.60 : x
  2. Step 2: Convert to fraction form
    99,718.36/137,610.80 = 54,395.60/x
  3. Step 3: Cross multiply
    99,718.36x = 137,610.80 × 54,395.60
  4. Step 4: Simplify right side
    99,718.36x = 7,485,422,032.48
  5. Step 5: Solve for x
    x = 7,485,422,032.48/99,718.36
  6. Step 6: Final answer
    x = 75,065.64

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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.