Home / 127,998.40-191,997.60-115,313.80

Finding the Fourth Proportional to 127,998.40, 191,997.60 and 115,313.80

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Solution

The fourth proportional to 127,998.40, 191,997.60 and 115,313.80 is: 172,970.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,998.40 : 191,997.60 = 115,313.80 : x
  2. Step 2: Convert to fraction form
    127,998.40/191,997.60 = 115,313.80/x
  3. Step 3: Cross multiply
    127,998.40x = 191,997.60 × 115,313.80
  4. Step 4: Simplify right side
    127,998.40x = 22,139,972,846.88
  5. Step 5: Solve for x
    x = 22,139,972,846.88/127,998.40
  6. Step 6: Final answer
    x = 172,970.70

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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.