Home / 142,169.09-195,959.43-100,789.83

Finding the Fourth Proportional to 142,169.09, 195,959.43 and 100,789.83

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Solution

The fourth proportional to 142,169.09, 195,959.43 and 100,789.83 is: 138,924.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,169.09 : 195,959.43 = 100,789.83 : x
  2. Step 2: Convert to fraction form
    142,169.09/195,959.43 = 100,789.83/x
  3. Step 3: Cross multiply
    142,169.09x = 195,959.43 × 100,789.83
  4. Step 4: Simplify right side
    142,169.09x = 19,750,717,636.60
  5. Step 5: Solve for x
    x = 19,750,717,636.60/142,169.09
  6. Step 6: Final answer
    x = 138,924.13

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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.