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Finding the Fourth Proportional to 136,659.62, 188,467.48 and 85,677.91

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Solution

The fourth proportional to 136,659.62, 188,467.48 and 85,677.91 is: 118,158.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,659.62 : 188,467.48 = 85,677.91 : x
  2. Step 2: Convert to fraction form
    136,659.62/188,467.48 = 85,677.91/x
  3. Step 3: Cross multiply
    136,659.62x = 188,467.48 × 85,677.91
  4. Step 4: Simplify right side
    136,659.62x = 16,147,499,360.98
  5. Step 5: Solve for x
    x = 16,147,499,360.98/136,659.62
  6. Step 6: Final answer
    x = 118,158.53

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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.