Home / 136,331.32-188,123.82-79,731.64

Finding the Fourth Proportional to 136,331.32, 188,123.82 and 79,731.64

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Solution

The fourth proportional to 136,331.32, 188,123.82 and 79,731.64 is: 110,021.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,331.32 : 188,123.82 = 79,731.64 : x
  2. Step 2: Convert to fraction form
    136,331.32/188,123.82 = 79,731.64/x
  3. Step 3: Cross multiply
    136,331.32x = 188,123.82 × 79,731.64
  4. Step 4: Simplify right side
    136,331.32x = 14,999,420,691.66
  5. Step 5: Solve for x
    x = 14,999,420,691.66/136,331.32
  6. Step 6: Final answer
    x = 110,021.83

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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.