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Finding the Fourth Proportional to 104,998.18, 157,469.19 and 71,712.58

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Solution

The fourth proportional to 104,998.18, 157,469.19 and 71,712.58 is: 107,549.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,998.18 : 157,469.19 = 71,712.58 : x
  2. Step 2: Convert to fraction form
    104,998.18/157,469.19 = 71,712.58/x
  3. Step 3: Cross multiply
    104,998.18x = 157,469.19 × 71,712.58
  4. Step 4: Simplify right side
    104,998.18x = 11,292,521,885.41
  5. Step 5: Solve for x
    x = 11,292,521,885.41/104,998.18
  6. Step 6: Final answer
    x = 107,549.69

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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.