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Finding the Fourth Proportional to 117,893.72, 162,645.26 and 72,558.02

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Solution

The fourth proportional to 117,893.72, 162,645.26 and 72,558.02 is: 100,100.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,893.72 : 162,645.26 = 72,558.02 : x
  2. Step 2: Convert to fraction form
    117,893.72/162,645.26 = 72,558.02/x
  3. Step 3: Cross multiply
    117,893.72x = 162,645.26 × 72,558.02
  4. Step 4: Simplify right side
    117,893.72x = 11,801,216,851.97
  5. Step 5: Solve for x
    x = 11,801,216,851.97/117,893.72
  6. Step 6: Final answer
    x = 100,100.47

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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.