Home / 149,836.80-206,899.20-99,763.20

Finding the Fourth Proportional to 149,836.80, 206,899.20 and 99,763.20

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Solution

The fourth proportional to 149,836.80, 206,899.20 and 99,763.20 is: 137,756.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,836.80 : 206,899.20 = 99,763.20 : x
  2. Step 2: Convert to fraction form
    149,836.80/206,899.20 = 99,763.20/x
  3. Step 3: Cross multiply
    149,836.80x = 206,899.20 × 99,763.20
  4. Step 4: Simplify right side
    149,836.80x = 20,640,926,269.44
  5. Step 5: Solve for x
    x = 20,640,926,269.44/149,836.80
  6. Step 6: Final answer
    x = 137,756.05

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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.