Home / 116,917.96-161,347.80-66,620.20

Finding the Fourth Proportional to 116,917.96, 161,347.80 and 66,620.20

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Solution

The fourth proportional to 116,917.96, 161,347.80 and 66,620.20 is: 91,936.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,917.96 : 161,347.80 = 66,620.20 : x
  2. Step 2: Convert to fraction form
    116,917.96/161,347.80 = 66,620.20/x
  3. Step 3: Cross multiply
    116,917.96x = 161,347.80 × 66,620.20
  4. Step 4: Simplify right side
    116,917.96x = 10,749,022,705.56
  5. Step 5: Solve for x
    x = 10,749,022,705.56/116,917.96
  6. Step 6: Final answer
    x = 91,936.45

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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.