Home / 149,147.76-205,828.22-81,169.12

Finding the Fourth Proportional to 149,147.76, 205,828.22 and 81,169.12

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Solution

The fourth proportional to 149,147.76, 205,828.22 and 81,169.12 is: 112,015.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,147.76 : 205,828.22 = 81,169.12 : x
  2. Step 2: Convert to fraction form
    149,147.76/205,828.22 = 81,169.12/x
  3. Step 3: Cross multiply
    149,147.76x = 205,828.22 × 81,169.12
  4. Step 4: Simplify right side
    149,147.76x = 16,706,895,948.77
  5. Step 5: Solve for x
    x = 16,706,895,948.77/149,147.76
  6. Step 6: Final answer
    x = 112,015.73

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1.5x scale

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.