Home / 117,318.90-161,887.97-71,998.80

Finding the Fourth Proportional to 117,318.90, 161,887.97 and 71,998.80

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Solution

The fourth proportional to 117,318.90, 161,887.97 and 71,998.80 is: 99,350.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,318.90 : 161,887.97 = 71,998.80 : x
  2. Step 2: Convert to fraction form
    117,318.90/161,887.97 = 71,998.80/x
  3. Step 3: Cross multiply
    117,318.90x = 161,887.97 × 71,998.80
  4. Step 4: Simplify right side
    117,318.90x = 11,655,738,765.00
  5. Step 5: Solve for x
    x = 11,655,738,765.00/117,318.90
  6. Step 6: Final answer
    x = 99,350.90

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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.