Home / 205,285.10-307,863.65-80,664.30

Finding the Fourth Proportional to 205,285.10, 307,863.65 and 80,664.30

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Solution

The fourth proportional to 205,285.10, 307,863.65 and 80,664.30 is: 120,971.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,285.10 : 307,863.65 = 80,664.30 : x
  2. Step 2: Convert to fraction form
    205,285.10/307,863.65 = 80,664.30/x
  3. Step 3: Cross multiply
    205,285.10x = 307,863.65 × 80,664.30
  4. Step 4: Simplify right side
    205,285.10x = 24,833,605,822.70
  5. Step 5: Solve for x
    x = 24,833,605,822.70/205,285.10
  6. Step 6: Final answer
    x = 120,971.30

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1.5x scale

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.