Home / 99,918.11-137,882.71-54,595.37

Finding the Fourth Proportional to 99,918.11, 137,882.71 and 54,595.37

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Solution

The fourth proportional to 99,918.11, 137,882.71 and 54,595.37 is: 75,339.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,918.11 : 137,882.71 = 54,595.37 : x
  2. Step 2: Convert to fraction form
    99,918.11/137,882.71 = 54,595.37/x
  3. Step 3: Cross multiply
    99,918.11x = 137,882.71 × 54,595.37
  4. Step 4: Simplify right side
    99,918.11x = 7,527,757,569.05
  5. Step 5: Solve for x
    x = 7,527,757,569.05/99,918.11
  6. Step 6: Final answer
    x = 75,339.27

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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.