Home / 101,442.20-152,163.30-99,692.60

Finding the Fourth Proportional to 101,442.20, 152,163.30 and 99,692.60

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Solution

The fourth proportional to 101,442.20, 152,163.30 and 99,692.60 is: 149,538.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,442.20 : 152,163.30 = 99,692.60 : x
  2. Step 2: Convert to fraction form
    101,442.20/152,163.30 = 99,692.60/x
  3. Step 3: Cross multiply
    101,442.20x = 152,163.30 × 99,692.60
  4. Step 4: Simplify right side
    101,442.20x = 15,169,555,001.58
  5. Step 5: Solve for x
    x = 15,169,555,001.58/101,442.20
  6. Step 6: Final answer
    x = 149,538.90

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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.