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Finding the Fourth Proportional to 127,425.51, 191,161.31 and 52,503.97

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Solution

The fourth proportional to 127,425.51, 191,161.31 and 52,503.97 is: 78,765.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,425.51 : 191,161.31 = 52,503.97 : x
  2. Step 2: Convert to fraction form
    127,425.51/191,161.31 = 52,503.97/x
  3. Step 3: Cross multiply
    127,425.51x = 191,161.31 × 52,503.97
  4. Step 4: Simplify right side
    127,425.51x = 10,036,727,685.40
  5. Step 5: Solve for x
    x = 10,036,727,685.40/127,425.51
  6. Step 6: Final answer
    x = 78,765.45

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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.