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Finding the Fourth Proportional to 127,136.86, 190,631.13 and 38,363.74

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Solution

The fourth proportional to 127,136.86, 190,631.13 and 38,363.74 is: 57,523.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,136.86 : 190,631.13 = 38,363.74 : x
  2. Step 2: Convert to fraction form
    127,136.86/190,631.13 = 38,363.74/x
  3. Step 3: Cross multiply
    127,136.86x = 190,631.13 × 38,363.74
  4. Step 4: Simplify right side
    127,136.86x = 7,313,323,107.23
  5. Step 5: Solve for x
    x = 7,313,323,107.23/127,136.86
  6. Step 6: Final answer
    x = 57,523.23

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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.