Home / 120,985.20-181,458.40-37,879.20

Finding the Fourth Proportional to 120,985.20, 181,458.40 and 37,879.20

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Solution

The fourth proportional to 120,985.20, 181,458.40 and 37,879.20 is: 56,812.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,985.20 : 181,458.40 = 37,879.20 : x
  2. Step 2: Convert to fraction form
    120,985.20/181,458.40 = 37,879.20/x
  3. Step 3: Cross multiply
    120,985.20x = 181,458.40 × 37,879.20
  4. Step 4: Simplify right side
    120,985.20x = 6,873,499,025.28
  5. Step 5: Solve for x
    x = 6,873,499,025.28/120,985.20
  6. Step 6: Final answer
    x = 56,812.73

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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.