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Finding the Fourth Proportional to 100,544.49, 138,754.31 and 57,530.97

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Solution

The fourth proportional to 100,544.49, 138,754.31 and 57,530.97 is: 79,394.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,544.49 : 138,754.31 = 57,530.97 : x
  2. Step 2: Convert to fraction form
    100,544.49/138,754.31 = 57,530.97/x
  3. Step 3: Cross multiply
    100,544.49x = 138,754.31 × 57,530.97
  4. Step 4: Simplify right side
    100,544.49x = 7,982,669,758.33
  5. Step 5: Solve for x
    x = 7,982,669,758.33/100,544.49
  6. Step 6: Final answer
    x = 79,394.40

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1.5x scale

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.