Home / 149,842.80-206,907.48-99,769.20

Finding the Fourth Proportional to 149,842.80, 206,907.48 and 99,769.20

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Solution

The fourth proportional to 149,842.80, 206,907.48 and 99,769.20 is: 137,764.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,842.80 : 206,907.48 = 99,769.20 : x
  2. Step 2: Convert to fraction form
    149,842.80/206,907.48 = 99,769.20/x
  3. Step 3: Cross multiply
    149,842.80x = 206,907.48 × 99,769.20
  4. Step 4: Simplify right side
    149,842.80x = 20,642,993,753.62
  5. Step 5: Solve for x
    x = 20,642,993,753.62/149,842.80
  6. Step 6: Final answer
    x = 137,764.34

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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.