Home / 99,865.31-137,815.17-54,544.60

Finding the Fourth Proportional to 99,865.31, 137,815.17 and 54,544.60

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Solution

The fourth proportional to 99,865.31, 137,815.17 and 54,544.60 is: 75,272.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,865.31 : 137,815.17 = 54,544.60 : x
  2. Step 2: Convert to fraction form
    99,865.31/137,815.17 = 54,544.60/x
  3. Step 3: Cross multiply
    99,865.31x = 137,815.17 × 54,544.60
  4. Step 4: Simplify right side
    99,865.31x = 7,517,072,632.51
  5. Step 5: Solve for x
    x = 7,517,072,632.51/99,865.31
  6. Step 6: Final answer
    x = 75,272.11

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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.