Home / 109,357.20-164,035.80-76,179.60

Finding the Fourth Proportional to 109,357.20, 164,035.80 and 76,179.60

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Solution

The fourth proportional to 109,357.20, 164,035.80 and 76,179.60 is: 114,269.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,357.20 : 164,035.80 = 76,179.60 : x
  2. Step 2: Convert to fraction form
    109,357.20/164,035.80 = 76,179.60/x
  3. Step 3: Cross multiply
    109,357.20x = 164,035.80 × 76,179.60
  4. Step 4: Simplify right side
    109,357.20x = 12,496,181,629.68
  5. Step 5: Solve for x
    x = 12,496,181,629.68/109,357.20
  6. Step 6: Final answer
    x = 114,269.40

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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.