Home / 136,664.11-188,538.34-85,642.12

Finding the Fourth Proportional to 136,664.11, 188,538.34 and 85,642.12

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Solution

The fourth proportional to 136,664.11, 188,538.34 and 85,642.12 is: 118,149.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,664.11 : 188,538.34 = 85,642.12 : x
  2. Step 2: Convert to fraction form
    136,664.11/188,538.34 = 85,642.12/x
  3. Step 3: Cross multiply
    136,664.11x = 188,538.34 × 85,642.12
  4. Step 4: Simplify right side
    136,664.11x = 16,146,823,138.88
  5. Step 5: Solve for x
    x = 16,146,823,138.88/136,664.11
  6. Step 6: Final answer
    x = 118,149.70

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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.