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Finding the Fourth Proportional to 127,342, 191,013 and 39,790

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Solution

The fourth proportional to 127,342, 191,013 and 39,790 is: 59,685

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,342 : 191,013 = 39,790 : x
  2. Step 2: Convert to fraction form
    127,342/191,013 = 39,790/x
  3. Step 3: Cross multiply
    127,342x = 191,013 × 39,790
  4. Step 4: Simplify right side
    127,342x = 7,600,407,270
  5. Step 5: Solve for x
    x = 7,600,407,270/127,342
  6. Step 6: Final answer
    x = 59,685

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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.