Home / 149,410.07-206,191.13-81,432.71

Finding the Fourth Proportional to 149,410.07, 206,191.13 and 81,432.71

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Solution

The fourth proportional to 149,410.07, 206,191.13 and 81,432.71 is: 112,379.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,410.07 : 206,191.13 = 81,432.71 : x
  2. Step 2: Convert to fraction form
    149,410.07/206,191.13 = 81,432.71/x
  3. Step 3: Cross multiply
    149,410.07x = 206,191.13 × 81,432.71
  4. Step 4: Simplify right side
    149,410.07x = 16,790,702,493.86
  5. Step 5: Solve for x
    x = 16,790,702,493.86/149,410.07
  6. Step 6: Final answer
    x = 112,379.99

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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.