Home / 100,566.85-138,783.14-55,245.84

Finding the Fourth Proportional to 100,566.85, 138,783.14 and 55,245.84

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Solution

The fourth proportional to 100,566.85, 138,783.14 and 55,245.84 is: 76,239.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,566.85 : 138,783.14 = 55,245.84 : x
  2. Step 2: Convert to fraction form
    100,566.85/138,783.14 = 55,245.84/x
  3. Step 3: Cross multiply
    100,566.85x = 138,783.14 × 55,245.84
  4. Step 4: Simplify right side
    100,566.85x = 7,667,191,147.14
  5. Step 5: Solve for x
    x = 7,667,191,147.14/100,566.85
  6. Step 6: Final answer
    x = 76,239.75

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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.