Home / 149,899.68-206,859.06-81,915.15

Finding the Fourth Proportional to 149,899.68, 206,859.06 and 81,915.15

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Solution

The fourth proportional to 149,899.68, 206,859.06 and 81,915.15 is: 113,041.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,899.68 : 206,859.06 = 81,915.15 : x
  2. Step 2: Convert to fraction form
    149,899.68/206,859.06 = 81,915.15/x
  3. Step 3: Cross multiply
    149,899.68x = 206,859.06 × 81,915.15
  4. Step 4: Simplify right side
    149,899.68x = 16,944,890,928.76
  5. Step 5: Solve for x
    x = 16,944,890,928.76/149,899.68
  6. Step 6: Final answer
    x = 113,041.54

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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.