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Finding the Fourth Proportional to 118,100.89, 162,992.01 and 72,769.24

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Solution

The fourth proportional to 118,100.89, 162,992.01 and 72,769.24 is: 100,429.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,100.89 : 162,992.01 = 72,769.24 : x
  2. Step 2: Convert to fraction form
    118,100.89/162,992.01 = 72,769.24/x
  3. Step 3: Cross multiply
    118,100.89x = 162,992.01 × 72,769.24
  4. Step 4: Simplify right side
    118,100.89x = 11,860,804,693.77
  5. Step 5: Solve for x
    x = 11,860,804,693.77/118,100.89
  6. Step 6: Final answer
    x = 100,429.43

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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.