Home / 117,190.40-161,732.70-66,212.48

Finding the Fourth Proportional to 117,190.40, 161,732.70 and 66,212.48

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Solution

The fourth proportional to 117,190.40, 161,732.70 and 66,212.48 is: 91,378.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,190.40 : 161,732.70 = 66,212.48 : x
  2. Step 2: Convert to fraction form
    117,190.40/161,732.70 = 66,212.48/x
  3. Step 3: Cross multiply
    117,190.40x = 161,732.70 × 66,212.48
  4. Step 4: Simplify right side
    117,190.40x = 10,708,723,164.10
  5. Step 5: Solve for x
    x = 10,708,723,164.10/117,190.40
  6. Step 6: Final answer
    x = 91,378.84

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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.