Home / 205,917.40-309,048.90-100,826.20

Finding the Fourth Proportional to 205,917.40, 309,048.90 and 100,826.20

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Solution

The fourth proportional to 205,917.40, 309,048.90 and 100,826.20 is: 151,323.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,917.40 : 309,048.90 = 100,826.20 : x
  2. Step 2: Convert to fraction form
    205,917.40/309,048.90 = 100,826.20/x
  3. Step 3: Cross multiply
    205,917.40x = 309,048.90 × 100,826.20
  4. Step 4: Simplify right side
    205,917.40x = 31,160,226,201.18
  5. Step 5: Solve for x
    x = 31,160,226,201.18/205,917.40
  6. Step 6: Final answer
    x = 151,323.91

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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.