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Finding the Fourth Proportional to 149,449.60, 206,234.20 and 81,465.08

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Solution

The fourth proportional to 149,449.60, 206,234.20 and 81,465.08 is: 112,418.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,449.60 : 206,234.20 = 81,465.08 : x
  2. Step 2: Convert to fraction form
    149,449.60/206,234.20 = 81,465.08/x
  3. Step 3: Cross multiply
    149,449.60x = 206,234.20 × 81,465.08
  4. Step 4: Simplify right side
    149,449.60x = 16,800,885,601.74
  5. Step 5: Solve for x
    x = 16,800,885,601.74/149,449.60
  6. Step 6: Final answer
    x = 112,418.40

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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.