Home / 101,118.26-139,543.04-55,796.21

Finding the Fourth Proportional to 101,118.26, 139,543.04 and 55,796.21

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Solution

The fourth proportional to 101,118.26, 139,543.04 and 55,796.21 is: 76,998.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,118.26 : 139,543.04 = 55,796.21 : x
  2. Step 2: Convert to fraction form
    101,118.26/139,543.04 = 55,796.21/x
  3. Step 3: Cross multiply
    101,118.26x = 139,543.04 × 55,796.21
  4. Step 4: Simplify right side
    101,118.26x = 7,785,972,415.09
  5. Step 5: Solve for x
    x = 7,785,972,415.09/101,118.26
  6. Step 6: Final answer
    x = 76,998.68

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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.