Home / 100,555.82-138,763.23-55,846.70

Finding the Fourth Proportional to 100,555.82, 138,763.23 and 55,846.70

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Solution

The fourth proportional to 100,555.82, 138,763.23 and 55,846.70 is: 77,066.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,555.82 : 138,763.23 = 55,846.70 : x
  2. Step 2: Convert to fraction form
    100,555.82/138,763.23 = 55,846.70/x
  3. Step 3: Cross multiply
    100,555.82x = 138,763.23 × 55,846.70
  4. Step 4: Simplify right side
    100,555.82x = 7,749,468,476.84
  5. Step 5: Solve for x
    x = 7,749,468,476.84/100,555.82
  6. Step 6: Final answer
    x = 77,066.33

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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.