Home / 100,585.14-138,806.94-54,644.40

Finding the Fourth Proportional to 100,585.14, 138,806.94 and 54,644.40

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Solution

The fourth proportional to 100,585.14, 138,806.94 and 54,644.40 is: 75,408.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,585.14 : 138,806.94 = 54,644.40 : x
  2. Step 2: Convert to fraction form
    100,585.14/138,806.94 = 54,644.40/x
  3. Step 3: Cross multiply
    100,585.14x = 138,806.94 × 54,644.40
  4. Step 4: Simplify right side
    100,585.14x = 7,585,021,952.14
  5. Step 5: Solve for x
    x = 7,585,021,952.14/100,585.14
  6. Step 6: Final answer
    x = 75,408.97

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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.