Home / 100,836.36-139,154.76-55,514.52

Finding the Fourth Proportional to 100,836.36, 139,154.76 and 55,514.52

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Solution

The fourth proportional to 100,836.36, 139,154.76 and 55,514.52 is: 76,610.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,836.36 : 139,154.76 = 55,514.52 : x
  2. Step 2: Convert to fraction form
    100,836.36/139,154.76 = 55,514.52/x
  3. Step 3: Cross multiply
    100,836.36x = 139,154.76 × 55,514.52
  4. Step 4: Simplify right side
    100,836.36x = 7,725,109,707.12
  5. Step 5: Solve for x
    x = 7,725,109,707.12/100,836.36
  6. Step 6: Final answer
    x = 76,610.36

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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.