Home / 149,134.41-205,806.41-81,151.92

Finding the Fourth Proportional to 149,134.41, 205,806.41 and 81,151.92

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Solution

The fourth proportional to 149,134.41, 205,806.41 and 81,151.92 is: 111,990.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,134.41 : 205,806.41 = 81,151.92 : x
  2. Step 2: Convert to fraction form
    149,134.41/205,806.41 = 81,151.92/x
  3. Step 3: Cross multiply
    149,134.41x = 205,806.41 × 81,151.92
  4. Step 4: Simplify right side
    149,134.41x = 16,701,585,319.81
  5. Step 5: Solve for x
    x = 16,701,585,319.81/149,134.41
  6. Step 6: Final answer
    x = 111,990.15

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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.