Home / 117,320.22-161,911.23-66,343.68

Finding the Fourth Proportional to 117,320.22, 161,911.23 and 66,343.68

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Solution

The fourth proportional to 117,320.22, 161,911.23 and 66,343.68 is: 91,559.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,320.22 : 161,911.23 = 66,343.68 : x
  2. Step 2: Convert to fraction form
    117,320.22/161,911.23 = 66,343.68/x
  3. Step 3: Cross multiply
    117,320.22x = 161,911.23 × 66,343.68
  4. Step 4: Simplify right side
    117,320.22x = 10,741,786,831.53
  5. Step 5: Solve for x
    x = 10,741,786,831.53/117,320.22
  6. Step 6: Final answer
    x = 91,559.55

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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.