Home / 141,687.20-212,530.80-108,509.60

Finding the Fourth Proportional to 141,687.20, 212,530.80 and 108,509.60

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Solution

The fourth proportional to 141,687.20, 212,530.80 and 108,509.60 is: 162,764.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,687.20 : 212,530.80 = 108,509.60 : x
  2. Step 2: Convert to fraction form
    141,687.20/212,530.80 = 108,509.60/x
  3. Step 3: Cross multiply
    141,687.20x = 212,530.80 × 108,509.60
  4. Step 4: Simplify right side
    141,687.20x = 23,061,632,095.68
  5. Step 5: Solve for x
    x = 23,061,632,095.68/141,687.20
  6. Step 6: Final answer
    x = 162,764.40

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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.