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Finding the Fourth Proportional to 127,977, 176,586.39 and 74,249.70

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Solution

The fourth proportional to 127,977, 176,586.39 and 74,249.70 is: 102,451.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,977 : 176,586.39 = 74,249.70 : x
  2. Step 2: Convert to fraction form
    127,977/176,586.39 = 74,249.70/x
  3. Step 3: Cross multiply
    127,977x = 176,586.39 × 74,249.70
  4. Step 4: Simplify right side
    127,977x = 13,111,486,481.58
  5. Step 5: Solve for x
    x = 13,111,486,481.58/127,977
  6. Step 6: Final answer
    x = 102,451.90

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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.