Home / 136,270.48-188,037.60-78,910.90

Finding the Fourth Proportional to 136,270.48, 188,037.60 and 78,910.90

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Solution

The fourth proportional to 136,270.48, 188,037.60 and 78,910.90 is: 108,887.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,270.48 : 188,037.60 = 78,910.90 : x
  2. Step 2: Convert to fraction form
    136,270.48/188,037.60 = 78,910.90/x
  3. Step 3: Cross multiply
    136,270.48x = 188,037.60 × 78,910.90
  4. Step 4: Simplify right side
    136,270.48x = 14,838,216,249.84
  5. Step 5: Solve for x
    x = 14,838,216,249.84/136,270.48
  6. Step 6: Final answer
    x = 108,887.97

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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.