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Finding the Fourth Proportional to 136,892.79, 205,372.17 and 43,398.54

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Solution

The fourth proportional to 136,892.79, 205,372.17 and 43,398.54 is: 65,108.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,892.79 : 205,372.17 = 43,398.54 : x
  2. Step 2: Convert to fraction form
    136,892.79/205,372.17 = 43,398.54/x
  3. Step 3: Cross multiply
    136,892.79x = 205,372.17 × 43,398.54
  4. Step 4: Simplify right side
    136,892.79x = 8,912,852,334.63
  5. Step 5: Solve for x
    x = 8,912,852,334.63/136,892.79
  6. Step 6: Final answer
    x = 65,108.27

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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.