Home / 123,998.10-185,997.15-86,673.30

Finding the Fourth Proportional to 123,998.10, 185,997.15 and 86,673.30

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Solution

The fourth proportional to 123,998.10, 185,997.15 and 86,673.30 is: 130,009.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,998.10 : 185,997.15 = 86,673.30 : x
  2. Step 2: Convert to fraction form
    123,998.10/185,997.15 = 86,673.30/x
  3. Step 3: Cross multiply
    123,998.10x = 185,997.15 × 86,673.30
  4. Step 4: Simplify right side
    123,998.10x = 16,120,986,781.10
  5. Step 5: Solve for x
    x = 16,120,986,781.10/123,998.10
  6. Step 6: Final answer
    x = 130,009.95

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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.