Home / 136,486.30-188,351.50-79,136.86

Finding the Fourth Proportional to 136,486.30, 188,351.50 and 79,136.86

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Solution

The fourth proportional to 136,486.30, 188,351.50 and 79,136.86 is: 109,209.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,486.30 : 188,351.50 = 79,136.86 : x
  2. Step 2: Convert to fraction form
    136,486.30/188,351.50 = 79,136.86/x
  3. Step 3: Cross multiply
    136,486.30x = 188,351.50 × 79,136.86
  4. Step 4: Simplify right side
    136,486.30x = 14,905,546,286.29
  5. Step 5: Solve for x
    x = 14,905,546,286.29/136,486.30
  6. Step 6: Final answer
    x = 109,209.10

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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.