Home / 206,564.00-309,785.94-86,617.64

Finding the Fourth Proportional to 206,564.00, 309,785.94 and 86,617.64

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Solution

The fourth proportional to 206,564.00, 309,785.94 and 86,617.64 is: 129,901.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,564.00 : 309,785.94 = 86,617.64 : x
  2. Step 2: Convert to fraction form
    206,564.00/309,785.94 = 86,617.64/x
  3. Step 3: Cross multiply
    206,564.00x = 309,785.94 × 86,617.64
  4. Step 4: Simplify right side
    206,564.00x = 26,832,927,802.45
  5. Step 5: Solve for x
    x = 26,832,927,802.45/206,564.00
  6. Step 6: Final answer
    x = 129,901.28

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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.