Home / 100,917.69-139,408.05-95,603.28

Finding the Fourth Proportional to 100,917.69, 139,408.05 and 95,603.28

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Solution

The fourth proportional to 100,917.69, 139,408.05 and 95,603.28 is: 132,066.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,917.69 : 139,408.05 = 95,603.28 : x
  2. Step 2: Convert to fraction form
    100,917.69/139,408.05 = 95,603.28/x
  3. Step 3: Cross multiply
    100,917.69x = 139,408.05 × 95,603.28
  4. Step 4: Simplify right side
    100,917.69x = 13,327,866,141.36
  5. Step 5: Solve for x
    x = 13,327,866,141.36/100,917.69
  6. Step 6: Final answer
    x = 132,066.71

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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.