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Finding the Fourth Proportional to 136,245.40, 188,022.99 and 85,241.77

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Solution

The fourth proportional to 136,245.40, 188,022.99 and 85,241.77 is: 117,636.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,245.40 : 188,022.99 = 85,241.77 : x
  2. Step 2: Convert to fraction form
    136,245.40/188,022.99 = 85,241.77/x
  3. Step 3: Cross multiply
    136,245.40x = 188,022.99 × 85,241.77
  4. Step 4: Simplify right side
    136,245.40x = 16,027,412,468.29
  5. Step 5: Solve for x
    x = 16,027,412,468.29/136,245.40
  6. Step 6: Final answer
    x = 117,636.36

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1.5x scale

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.