Home / 98,103.79-135,379.24-55,661.41

Finding the Fourth Proportional to 98,103.79, 135,379.24 and 55,661.41

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Solution

The fourth proportional to 98,103.79, 135,379.24 and 55,661.41 is: 76,810.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,103.79 : 135,379.24 = 55,661.41 : x
  2. Step 2: Convert to fraction form
    98,103.79/135,379.24 = 55,661.41/x
  3. Step 3: Cross multiply
    98,103.79x = 135,379.24 × 55,661.41
  4. Step 4: Simplify right side
    98,103.79x = 7,535,399,383.13
  5. Step 5: Solve for x
    x = 7,535,399,383.13/98,103.79
  6. Step 6: Final answer
    x = 76,810.48

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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.