Home / 101,185.07-139,640.08-55,869.49

Finding the Fourth Proportional to 101,185.07, 139,640.08 and 55,869.49

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Solution

The fourth proportional to 101,185.07, 139,640.08 and 55,869.49 is: 77,102.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,185.07 : 139,640.08 = 55,869.49 : x
  2. Step 2: Convert to fraction form
    101,185.07/139,640.08 = 55,869.49/x
  3. Step 3: Cross multiply
    101,185.07x = 139,640.08 × 55,869.49
  4. Step 4: Simplify right side
    101,185.07x = 7,801,619,564.39
  5. Step 5: Solve for x
    x = 7,801,619,564.39/101,185.07
  6. Step 6: Final answer
    x = 77,102.48

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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.