Home / 205,106.20-307,659.30-135,064.60

Finding the Fourth Proportional to 205,106.20, 307,659.30 and 135,064.60

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Solution

The fourth proportional to 205,106.20, 307,659.30 and 135,064.60 is: 202,596.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,106.20 : 307,659.30 = 135,064.60 : x
  2. Step 2: Convert to fraction form
    205,106.20/307,659.30 = 135,064.60/x
  3. Step 3: Cross multiply
    205,106.20x = 307,659.30 × 135,064.60
  4. Step 4: Simplify right side
    205,106.20x = 41,553,880,290.78
  5. Step 5: Solve for x
    x = 41,553,880,290.78/205,106.20
  6. Step 6: Final answer
    x = 202,596.90

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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.