Home / 206,619.29-285,112.71-115,985.24

Finding the Fourth Proportional to 206,619.29, 285,112.71 and 115,985.24

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Solution

The fourth proportional to 206,619.29, 285,112.71 and 115,985.24 is: 160,047.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,619.29 : 285,112.71 = 115,985.24 : x
  2. Step 2: Convert to fraction form
    206,619.29/285,112.71 = 115,985.24/x
  3. Step 3: Cross multiply
    206,619.29x = 285,112.71 × 115,985.24
  4. Step 4: Simplify right side
    206,619.29x = 33,068,864,670.84
  5. Step 5: Solve for x
    x = 33,068,864,670.84/206,619.29
  6. Step 6: Final answer
    x = 160,047.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.