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Finding the Fourth Proportional to 127,909.79, 191,864.54 and 43,662.96

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Solution

The fourth proportional to 127,909.79, 191,864.54 and 43,662.96 is: 65,494.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,909.79 : 191,864.54 = 43,662.96 : x
  2. Step 2: Convert to fraction form
    127,909.79/191,864.54 = 43,662.96/x
  3. Step 3: Cross multiply
    127,909.79x = 191,864.54 × 43,662.96
  4. Step 4: Simplify right side
    127,909.79x = 8,377,372,776.12
  5. Step 5: Solve for x
    x = 8,377,372,776.12/127,909.79
  6. Step 6: Final answer
    x = 65,494.39

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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.