Home / 136,719.48-188,677.38-79,354.48

Finding the Fourth Proportional to 136,719.48, 188,677.38 and 79,354.48

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Solution

The fourth proportional to 136,719.48, 188,677.38 and 79,354.48 is: 109,511.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,719.48 : 188,677.38 = 79,354.48 : x
  2. Step 2: Convert to fraction form
    136,719.48/188,677.38 = 79,354.48/x
  3. Step 3: Cross multiply
    136,719.48x = 188,677.38 × 79,354.48
  4. Step 4: Simplify right side
    136,719.48x = 14,972,395,377.66
  5. Step 5: Solve for x
    x = 14,972,395,377.66/136,719.48
  6. Step 6: Final answer
    x = 109,511.79

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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.