Home / 103,703.22-143,067.87-76,911.66

Finding the Fourth Proportional to 103,703.22, 143,067.87 and 76,911.66

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Solution

The fourth proportional to 103,703.22, 143,067.87 and 76,911.66 is: 106,106.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,703.22 : 143,067.87 = 76,911.66 : x
  2. Step 2: Convert to fraction form
    103,703.22/143,067.87 = 76,911.66/x
  3. Step 3: Cross multiply
    103,703.22x = 143,067.87 × 76,911.66
  4. Step 4: Simplify right side
    103,703.22x = 11,003,587,374.36
  5. Step 5: Solve for x
    x = 11,003,587,374.36/103,703.22
  6. Step 6: Final answer
    x = 106,106.52

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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.