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Finding the Fourth Proportional to 136,808.09, 205,040.82 and 73,472.57

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Solution

The fourth proportional to 136,808.09, 205,040.82 and 73,472.57 is: 110,116.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,808.09 : 205,040.82 = 73,472.57 : x
  2. Step 2: Convert to fraction form
    136,808.09/205,040.82 = 73,472.57/x
  3. Step 3: Cross multiply
    136,808.09x = 205,040.82 × 73,472.57
  4. Step 4: Simplify right side
    136,808.09x = 15,064,875,606.25
  5. Step 5: Solve for x
    x = 15,064,875,606.25/136,808.09
  6. Step 6: Final answer
    x = 110,116.85

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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.