Home / 134,823.29-186,130.71-81,121.50

Finding the Fourth Proportional to 134,823.29, 186,130.71 and 81,121.50

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Solution

The fourth proportional to 134,823.29, 186,130.71 and 81,121.50 is: 111,992.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,823.29 : 186,130.71 = 81,121.50 : x
  2. Step 2: Convert to fraction form
    134,823.29/186,130.71 = 81,121.50/x
  3. Step 3: Cross multiply
    134,823.29x = 186,130.71 × 81,121.50
  4. Step 4: Simplify right side
    134,823.29x = 15,099,202,391.27
  5. Step 5: Solve for x
    x = 15,099,202,391.27/134,823.29
  6. Step 6: Final answer
    x = 111,992.54

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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.