Home / 206,659.09-285,116.17-135,080.41

Finding the Fourth Proportional to 206,659.09, 285,116.17 and 135,080.41

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Solution

The fourth proportional to 206,659.09, 285,116.17 and 135,080.41 is: 186,363.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,659.09 : 285,116.17 = 135,080.41 : x
  2. Step 2: Convert to fraction form
    206,659.09/285,116.17 = 135,080.41/x
  3. Step 3: Cross multiply
    206,659.09x = 285,116.17 × 135,080.41
  4. Step 4: Simplify right side
    206,659.09x = 38,513,609,141.23
  5. Step 5: Solve for x
    x = 38,513,609,141.23/206,659.09
  6. Step 6: Final answer
    x = 186,363.01

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1.5x scale

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.