Home / 101,186.39-139,633.61-55,863.45

Finding the Fourth Proportional to 101,186.39, 139,633.61 and 55,863.45

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Solution

The fourth proportional to 101,186.39, 139,633.61 and 55,863.45 is: 77,089.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,186.39 : 139,633.61 = 55,863.45 : x
  2. Step 2: Convert to fraction form
    101,186.39/139,633.61 = 55,863.45/x
  3. Step 3: Cross multiply
    101,186.39x = 139,633.61 × 55,863.45
  4. Step 4: Simplify right side
    101,186.39x = 7,800,414,911.24
  5. Step 5: Solve for x
    x = 7,800,414,911.24/101,186.39
  6. Step 6: Final answer
    x = 77,089.56

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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.