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Finding the Fourth Proportional to 127,920.43, 191,847.88 and 37,942.08

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Solution

The fourth proportional to 127,920.43, 191,847.88 and 37,942.08 is: 56,903.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,920.43 : 191,847.88 = 37,942.08 : x
  2. Step 2: Convert to fraction form
    127,920.43/191,847.88 = 37,942.08/x
  3. Step 3: Cross multiply
    127,920.43x = 191,847.88 × 37,942.08
  4. Step 4: Simplify right side
    127,920.43x = 7,279,107,610.79
  5. Step 5: Solve for x
    x = 7,279,107,610.79/127,920.43
  6. Step 6: Final answer
    x = 56,903.40

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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.