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Finding the Fourth Proportional to 127,974.48, 191,989.74 and 39,234.90

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Solution

The fourth proportional to 127,974.48, 191,989.74 and 39,234.90 is: 58,860.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,974.48 : 191,989.74 = 39,234.90 : x
  2. Step 2: Convert to fraction form
    127,974.48/191,989.74 = 39,234.90/x
  3. Step 3: Cross multiply
    127,974.48x = 191,989.74 × 39,234.90
  4. Step 4: Simplify right side
    127,974.48x = 7,532,698,249.93
  5. Step 5: Solve for x
    x = 7,532,698,249.93/127,974.48
  6. Step 6: Final answer
    x = 58,860.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.