Home / 149,132.87-205,800.31-81,151.19

Finding the Fourth Proportional to 149,132.87, 205,800.31 and 81,151.19

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Solution

The fourth proportional to 149,132.87, 205,800.31 and 81,151.19 is: 111,986.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,132.87 : 205,800.31 = 81,151.19 : x
  2. Step 2: Convert to fraction form
    149,132.87/205,800.31 = 81,151.19/x
  3. Step 3: Cross multiply
    149,132.87x = 205,800.31 × 81,151.19
  4. Step 4: Simplify right side
    149,132.87x = 16,700,940,058.87
  5. Step 5: Solve for x
    x = 16,700,940,058.87/149,132.87
  6. Step 6: Final answer
    x = 111,986.98

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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.