Home / 121,197.45-181,879.20-42,311.70

Finding the Fourth Proportional to 121,197.45, 181,879.20 and 42,311.70

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Solution

The fourth proportional to 121,197.45, 181,879.20 and 42,311.70 is: 63,496.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,197.45 : 181,879.20 = 42,311.70 : x
  2. Step 2: Convert to fraction form
    121,197.45/181,879.20 = 42,311.70/x
  3. Step 3: Cross multiply
    121,197.45x = 181,879.20 × 42,311.70
  4. Step 4: Simplify right side
    121,197.45x = 7,695,618,146.64
  5. Step 5: Solve for x
    x = 7,695,618,146.64/121,197.45
  6. Step 6: Final answer
    x = 63,496.54

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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.