Home / 101,121.36-139,546.48-55,799.76

Finding the Fourth Proportional to 101,121.36, 139,546.48 and 55,799.76

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Solution

The fourth proportional to 101,121.36, 139,546.48 and 55,799.76 is: 77,003.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,121.36 : 139,546.48 = 55,799.76 : x
  2. Step 2: Convert to fraction form
    101,121.36/139,546.48 = 55,799.76/x
  3. Step 3: Cross multiply
    101,121.36x = 139,546.48 × 55,799.76
  4. Step 4: Simplify right side
    101,121.36x = 7,786,660,092.84
  5. Step 5: Solve for x
    x = 7,786,660,092.84/101,121.36
  6. Step 6: Final answer
    x = 77,003.12

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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.