Home / 135,619.80-203,235.30-99,801.60

Finding the Fourth Proportional to 135,619.80, 203,235.30 and 99,801.60

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Solution

The fourth proportional to 135,619.80, 203,235.30 and 99,801.60 is: 149,559.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,619.80 : 203,235.30 = 99,801.60 : x
  2. Step 2: Convert to fraction form
    135,619.80/203,235.30 = 99,801.60/x
  3. Step 3: Cross multiply
    135,619.80x = 203,235.30 × 99,801.60
  4. Step 4: Simplify right side
    135,619.80x = 20,283,208,116.48
  5. Step 5: Solve for x
    x = 20,283,208,116.48/135,619.80
  6. Step 6: Final answer
    x = 149,559.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.