Home / 205,748.64-309,140.55-130,902.21

Finding the Fourth Proportional to 205,748.64, 309,140.55 and 130,902.21

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Solution

The fourth proportional to 205,748.64, 309,140.55 and 130,902.21 is: 196,682.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,748.64 : 309,140.55 = 130,902.21 : x
  2. Step 2: Convert to fraction form
    205,748.64/309,140.55 = 130,902.21/x
  3. Step 3: Cross multiply
    205,748.64x = 309,140.55 × 130,902.21
  4. Step 4: Simplify right side
    205,748.64x = 40,467,181,195.62
  5. Step 5: Solve for x
    x = 40,467,181,195.62/205,748.64
  6. Step 6: Final answer
    x = 196,682.62

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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.