Home / 149,439.59-206,220.43-81,455.07

Finding the Fourth Proportional to 149,439.59, 206,220.43 and 81,455.07

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Solution

The fourth proportional to 149,439.59, 206,220.43 and 81,455.07 is: 112,404.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,439.59 : 206,220.43 = 81,455.07 : x
  2. Step 2: Convert to fraction form
    149,439.59/206,220.43 = 81,455.07/x
  3. Step 3: Cross multiply
    149,439.59x = 206,220.43 × 81,455.07
  4. Step 4: Simplify right side
    149,439.59x = 16,797,699,928.73
  5. Step 5: Solve for x
    x = 16,797,699,928.73/149,439.59
  6. Step 6: Final answer
    x = 112,404.62

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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.