Home / 149,410.92-206,181-81,426.42

Finding the Fourth Proportional to 149,410.92, 206,181 and 81,426.42

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Solution

The fourth proportional to 149,410.92, 206,181 and 81,426.42 is: 112,365.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,410.92 : 206,181 = 81,426.42 : x
  2. Step 2: Convert to fraction form
    149,410.92/206,181 = 81,426.42/x
  3. Step 3: Cross multiply
    149,410.92x = 206,181 × 81,426.42
  4. Step 4: Simplify right side
    149,410.92x = 16,788,580,702.02
  5. Step 5: Solve for x
    x = 16,788,580,702.02/149,410.92
  6. Step 6: Final answer
    x = 112,365.15

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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.