Home / 99,645.26-137,548.85-72,999.41

Finding the Fourth Proportional to 99,645.26, 137,548.85 and 72,999.41

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Solution

The fourth proportional to 99,645.26, 137,548.85 and 72,999.41 is: 100,767.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,645.26 : 137,548.85 = 72,999.41 : x
  2. Step 2: Convert to fraction form
    99,645.26/137,548.85 = 72,999.41/x
  3. Step 3: Cross multiply
    99,645.26x = 137,548.85 × 72,999.41
  4. Step 4: Simplify right side
    99,645.26x = 10,040,983,843.44
  5. Step 5: Solve for x
    x = 10,040,983,843.44/99,645.26
  6. Step 6: Final answer
    x = 100,767.31

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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.