Home / 102,727.44-141,669-78,855.12

Finding the Fourth Proportional to 102,727.44, 141,669 and 78,855.12

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Solution

The fourth proportional to 102,727.44, 141,669 and 78,855.12 is: 108,747.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,727.44 : 141,669 = 78,855.12 : x
  2. Step 2: Convert to fraction form
    102,727.44/141,669 = 78,855.12/x
  3. Step 3: Cross multiply
    102,727.44x = 141,669 × 78,855.12
  4. Step 4: Simplify right side
    102,727.44x = 11,171,325,995.28
  5. Step 5: Solve for x
    x = 11,171,325,995.28/102,727.44
  6. Step 6: Final answer
    x = 108,747.24

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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.