Home / 206,465.39-309,668.93-66,205.79

Finding the Fourth Proportional to 206,465.39, 309,668.93 and 66,205.79

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Solution

The fourth proportional to 206,465.39, 309,668.93 and 66,205.79 is: 99,299.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,465.39 : 309,668.93 = 66,205.79 : x
  2. Step 2: Convert to fraction form
    206,465.39/309,668.93 = 66,205.79/x
  3. Step 3: Cross multiply
    206,465.39x = 309,668.93 × 66,205.79
  4. Step 4: Simplify right side
    206,465.39x = 20,501,875,818.08
  5. Step 5: Solve for x
    x = 20,501,875,818.08/206,465.39
  6. Step 6: Final answer
    x = 99,299.33

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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.