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Finding the Fourth Proportional to 117,539, 162,273.04 and 71,615.97

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Solution

The fourth proportional to 117,539, 162,273.04 and 71,615.97 is: 98,872.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,539 : 162,273.04 = 71,615.97 : x
  2. Step 2: Convert to fraction form
    117,539/162,273.04 = 71,615.97/x
  3. Step 3: Cross multiply
    117,539x = 162,273.04 × 71,615.97
  4. Step 4: Simplify right side
    117,539x = 11,621,341,164.45
  5. Step 5: Solve for x
    x = 11,621,341,164.45/117,539
  6. Step 6: Final answer
    x = 98,872.21

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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.