Home / 127,998.30-191,997.45-120,740.70

Finding the Fourth Proportional to 127,998.30, 191,997.45 and 120,740.70

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Solution

The fourth proportional to 127,998.30, 191,997.45 and 120,740.70 is: 181,111.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,998.30 : 191,997.45 = 120,740.70 : x
  2. Step 2: Convert to fraction form
    127,998.30/191,997.45 = 120,740.70/x
  3. Step 3: Cross multiply
    127,998.30x = 191,997.45 × 120,740.70
  4. Step 4: Simplify right side
    127,998.30x = 23,181,906,511.22
  5. Step 5: Solve for x
    x = 23,181,906,511.22/127,998.30
  6. Step 6: Final answer
    x = 181,111.05

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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.