Home / 136,916.15-204,874.65-80,783.15

Finding the Fourth Proportional to 136,916.15, 204,874.65 and 80,783.15

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Solution

The fourth proportional to 136,916.15, 204,874.65 and 80,783.15 is: 120,879.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,916.15 : 204,874.65 = 80,783.15 : x
  2. Step 2: Convert to fraction form
    136,916.15/204,874.65 = 80,783.15/x
  3. Step 3: Cross multiply
    136,916.15x = 204,874.65 × 80,783.15
  4. Step 4: Simplify right side
    136,916.15x = 16,550,419,582.15
  5. Step 5: Solve for x
    x = 16,550,419,582.15/136,916.15
  6. Step 6: Final answer
    x = 120,879.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.