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Finding the Fourth Proportional to 136,090.89, 204,133.45 and 72,932.49

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Solution

The fourth proportional to 136,090.89, 204,133.45 and 72,932.49 is: 109,397.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,090.89 : 204,133.45 = 72,932.49 : x
  2. Step 2: Convert to fraction form
    136,090.89/204,133.45 = 72,932.49/x
  3. Step 3: Cross multiply
    136,090.89x = 204,133.45 × 72,932.49
  4. Step 4: Simplify right side
    136,090.89x = 14,887,960,800.79
  5. Step 5: Solve for x
    x = 14,887,960,800.79/136,090.89
  6. Step 6: Final answer
    x = 109,397.19

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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.