Home / 121,509,183.28-167,682,672.92-66,505,039.80

Finding the Fourth Proportional to 121,509,183.28, 167,682,672.92 and 66,505,039.80

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Solution

The fourth proportional to 121,509,183.28, 167,682,672.92 and 66,505,039.80 is: 91,776,954.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,509,183.28 : 167,682,672.92 = 66,505,039.80 : x
  2. Step 2: Convert to fraction form
    121,509,183.28/167,682,672.92 = 66,505,039.80/x
  3. Step 3: Cross multiply
    121,509,183.28x = 167,682,672.92 × 66,505,039.80
  4. Step 4: Simplify right side
    121,509,183.28x = 11,151,742,836,314,980
  5. Step 5: Solve for x
    x = 11,151,742,836,314,980/121,509,183.28
  6. Step 6: Final answer
    x = 91,776,954.92

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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.