Home / 136,486.82-188,355.78-79,126.36

Finding the Fourth Proportional to 136,486.82, 188,355.78 and 79,126.36

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Solution

The fourth proportional to 136,486.82, 188,355.78 and 79,126.36 is: 109,196.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,486.82 : 188,355.78 = 79,126.36 : x
  2. Step 2: Convert to fraction form
    136,486.82/188,355.78 = 79,126.36/x
  3. Step 3: Cross multiply
    136,486.82x = 188,355.78 × 79,126.36
  4. Step 4: Simplify right side
    136,486.82x = 14,903,907,256.36
  5. Step 5: Solve for x
    x = 14,903,907,256.36/136,486.82
  6. Step 6: Final answer
    x = 109,196.68

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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.