Home / 98,131.58-135,421.19-55,105.09

Finding the Fourth Proportional to 98,131.58, 135,421.19 and 55,105.09

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Solution

The fourth proportional to 98,131.58, 135,421.19 and 55,105.09 is: 76,044.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,131.58 : 135,421.19 = 55,105.09 : x
  2. Step 2: Convert to fraction form
    98,131.58/135,421.19 = 55,105.09/x
  3. Step 3: Cross multiply
    98,131.58x = 135,421.19 × 55,105.09
  4. Step 4: Simplify right side
    98,131.58x = 7,462,396,862.86
  5. Step 5: Solve for x
    x = 7,462,396,862.86/98,131.58
  6. Step 6: Final answer
    x = 76,044.80

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1.5x scale

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.