Home / 100,784.22-139,067.55-60,489.42

Finding the Fourth Proportional to 100,784.22, 139,067.55 and 60,489.42

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Solution

The fourth proportional to 100,784.22, 139,067.55 and 60,489.42 is: 83,466.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,784.22 : 139,067.55 = 60,489.42 : x
  2. Step 2: Convert to fraction form
    100,784.22/139,067.55 = 60,489.42/x
  3. Step 3: Cross multiply
    100,784.22x = 139,067.55 × 60,489.42
  4. Step 4: Simplify right side
    100,784.22x = 8,412,115,440.32
  5. Step 5: Solve for x
    x = 8,412,115,440.32/100,784.22
  6. Step 6: Final answer
    x = 83,466.59

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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.