Home / 101,328.22-139,833.49-55,387.92

Finding the Fourth Proportional to 101,328.22, 139,833.49 and 55,387.92

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Solution

The fourth proportional to 101,328.22, 139,833.49 and 55,387.92 is: 76,435.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,328.22 : 139,833.49 = 55,387.92 : x
  2. Step 2: Convert to fraction form
    101,328.22/139,833.49 = 55,387.92/x
  3. Step 3: Cross multiply
    101,328.22x = 139,833.49 × 55,387.92
  4. Step 4: Simplify right side
    101,328.22x = 7,745,086,157.44
  5. Step 5: Solve for x
    x = 7,745,086,157.44/101,328.22
  6. Step 6: Final answer
    x = 76,435.63

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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.