Home / 100,040.10-138,067.25-57,606.90

Finding the Fourth Proportional to 100,040.10, 138,067.25 and 57,606.90

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Solution

The fourth proportional to 100,040.10, 138,067.25 and 57,606.90 is: 79,504.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,040.10 : 138,067.25 = 57,606.90 : x
  2. Step 2: Convert to fraction form
    100,040.10/138,067.25 = 57,606.90/x
  3. Step 3: Cross multiply
    100,040.10x = 138,067.25 × 57,606.90
  4. Step 4: Simplify right side
    100,040.10x = 7,953,626,264.03
  5. Step 5: Solve for x
    x = 7,953,626,264.03/100,040.10
  6. Step 6: Final answer
    x = 79,504.38

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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.