Home / 136,481.92-188,385.60-86,214.40

Finding the Fourth Proportional to 136,481.92, 188,385.60 and 86,214.40

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Solution

The fourth proportional to 136,481.92, 188,385.60 and 86,214.40 is: 119,001.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,481.92 : 188,385.60 = 86,214.40 : x
  2. Step 2: Convert to fraction form
    136,481.92/188,385.60 = 86,214.40/x
  3. Step 3: Cross multiply
    136,481.92x = 188,385.60 × 86,214.40
  4. Step 4: Simplify right side
    136,481.92x = 16,241,551,472.64
  5. Step 5: Solve for x
    x = 16,241,551,472.64/136,481.92
  6. Step 6: Final answer
    x = 119,001.49

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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.