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Finding the Fourth Proportional to 136,404.68, 188,239.02 and 79,805.12

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Solution

The fourth proportional to 136,404.68, 188,239.02 and 79,805.12 is: 110,131.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,404.68 : 188,239.02 = 79,805.12 : x
  2. Step 2: Convert to fraction form
    136,404.68/188,239.02 = 79,805.12/x
  3. Step 3: Cross multiply
    136,404.68x = 188,239.02 × 79,805.12
  4. Step 4: Simplify right side
    136,404.68x = 15,022,437,579.78
  5. Step 5: Solve for x
    x = 15,022,437,579.78/136,404.68
  6. Step 6: Final answer
    x = 110,131.39

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1.5x scale

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.