Home / 136,691.28-188,634.08-76,261.94

Finding the Fourth Proportional to 136,691.28, 188,634.08 and 76,261.94

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Solution

The fourth proportional to 136,691.28, 188,634.08 and 76,261.94 is: 105,241.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,691.28 : 188,634.08 = 76,261.94 : x
  2. Step 2: Convert to fraction form
    136,691.28/188,634.08 = 76,261.94/x
  3. Step 3: Cross multiply
    136,691.28x = 188,634.08 × 76,261.94
  4. Step 4: Simplify right side
    136,691.28x = 14,385,600,890.92
  5. Step 5: Solve for x
    x = 14,385,600,890.92/136,691.28
  6. Step 6: Final answer
    x = 105,241.54

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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.