Home / 140,939.20-211,927.20-118,129.60

Finding the Fourth Proportional to 140,939.20, 211,927.20 and 118,129.60

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Solution

The fourth proportional to 140,939.20, 211,927.20 and 118,129.60 is: 177,628.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,939.20 : 211,927.20 = 118,129.60 : x
  2. Step 2: Convert to fraction form
    140,939.20/211,927.20 = 118,129.60/x
  3. Step 3: Cross multiply
    140,939.20x = 211,927.20 × 118,129.60
  4. Step 4: Simplify right side
    140,939.20x = 25,034,875,365.12
  5. Step 5: Solve for x
    x = 25,034,875,365.12/140,939.20
  6. Step 6: Final answer
    x = 177,628.90

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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.