Home / 206,639.58-309,663.64-117,709.33

Finding the Fourth Proportional to 206,639.58, 309,663.64 and 117,709.33

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Solution

The fourth proportional to 206,639.58, 309,663.64 and 117,709.33 is: 176,395.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,639.58 : 309,663.64 = 117,709.33 : x
  2. Step 2: Convert to fraction form
    206,639.58/309,663.64 = 117,709.33/x
  3. Step 3: Cross multiply
    206,639.58x = 309,663.64 × 117,709.33
  4. Step 4: Simplify right side
    206,639.58x = 36,450,298,521.33
  5. Step 5: Solve for x
    x = 36,450,298,521.33/206,639.58
  6. Step 6: Final answer
    x = 176,395.53

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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.