Home / 149,382.71-206,145.45-81,400.26

Finding the Fourth Proportional to 149,382.71, 206,145.45 and 81,400.26

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Solution

The fourth proportional to 149,382.71, 206,145.45 and 81,400.26 is: 112,330.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,382.71 : 206,145.45 = 81,400.26 : x
  2. Step 2: Convert to fraction form
    149,382.71/206,145.45 = 81,400.26/x
  3. Step 3: Cross multiply
    149,382.71x = 206,145.45 × 81,400.26
  4. Step 4: Simplify right side
    149,382.71x = 16,780,293,227.82
  5. Step 5: Solve for x
    x = 16,780,293,227.82/149,382.71
  6. Step 6: Final answer
    x = 112,330.90

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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.