Home / 131,442.30-197,163.45-100,338.30

Finding the Fourth Proportional to 131,442.30, 197,163.45 and 100,338.30

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Solution

The fourth proportional to 131,442.30, 197,163.45 and 100,338.30 is: 150,507.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,442.30 : 197,163.45 = 100,338.30 : x
  2. Step 2: Convert to fraction form
    131,442.30/197,163.45 = 100,338.30/x
  3. Step 3: Cross multiply
    131,442.30x = 197,163.45 × 100,338.30
  4. Step 4: Simplify right side
    131,442.30x = 19,783,045,395.14
  5. Step 5: Solve for x
    x = 19,783,045,395.14/131,442.30
  6. Step 6: Final answer
    x = 150,507.45

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1.5x scale

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.