Home / 149,412.39-206,189.13-81,429.42

Finding the Fourth Proportional to 149,412.39, 206,189.13 and 81,429.42

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Solution

The fourth proportional to 149,412.39, 206,189.13 and 81,429.42 is: 112,372.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,412.39 : 206,189.13 = 81,429.42 : x
  2. Step 2: Convert to fraction form
    149,412.39/206,189.13 = 81,429.42/x
  3. Step 3: Cross multiply
    149,412.39x = 206,189.13 × 81,429.42
  4. Step 4: Simplify right side
    149,412.39x = 16,789,861,266.20
  5. Step 5: Solve for x
    x = 16,789,861,266.20/149,412.39
  6. Step 6: Final answer
    x = 112,372.62

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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.