Home / 207,872.09-286,871.87-115,999.42

Finding the Fourth Proportional to 207,872.09, 286,871.87 and 115,999.42

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Solution

The fourth proportional to 207,872.09, 286,871.87 and 115,999.42 is: 160,083.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,872.09 : 286,871.87 = 115,999.42 : x
  2. Step 2: Convert to fraction form
    207,872.09/286,871.87 = 115,999.42/x
  3. Step 3: Cross multiply
    207,872.09x = 286,871.87 × 115,999.42
  4. Step 4: Simplify right side
    207,872.09x = 33,276,968,519.96
  5. Step 5: Solve for x
    x = 33,276,968,519.96/207,872.09
  6. Step 6: Final answer
    x = 160,083.87

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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.