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Finding the Fourth Proportional to 100,270.91, 138,360.71 and 59,969.97

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Solution

The fourth proportional to 100,270.91, 138,360.71 and 59,969.97 is: 82,750.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,270.91 : 138,360.71 = 59,969.97 : x
  2. Step 2: Convert to fraction form
    100,270.91/138,360.71 = 59,969.97/x
  3. Step 3: Cross multiply
    100,270.91x = 138,360.71 × 59,969.97
  4. Step 4: Simplify right side
    100,270.91x = 8,297,487,328.03
  5. Step 5: Solve for x
    x = 8,297,487,328.03/100,270.91
  6. Step 6: Final answer
    x = 82,750.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.