Home / 136,796.11-188,781.83-85,811.00

Finding the Fourth Proportional to 136,796.11, 188,781.83 and 85,811.00

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Solution

The fourth proportional to 136,796.11, 188,781.83 and 85,811.00 is: 118,421.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,796.11 : 188,781.83 = 85,811.00 : x
  2. Step 2: Convert to fraction form
    136,796.11/188,781.83 = 85,811.00/x
  3. Step 3: Cross multiply
    136,796.11x = 188,781.83 × 85,811.00
  4. Step 4: Simplify right side
    136,796.11x = 16,199,556,713.12
  5. Step 5: Solve for x
    x = 16,199,556,713.12/136,796.11
  6. Step 6: Final answer
    x = 118,421.18

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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.