Home / 205,669.20-308,580.60-81,097.04

Finding the Fourth Proportional to 205,669.20, 308,580.60 and 81,097.04

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Solution

The fourth proportional to 205,669.20, 308,580.60 and 81,097.04 is: 121,675.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,669.20 : 308,580.60 = 81,097.04 : x
  2. Step 2: Convert to fraction form
    205,669.20/308,580.60 = 81,097.04/x
  3. Step 3: Cross multiply
    205,669.20x = 308,580.60 × 81,097.04
  4. Step 4: Simplify right side
    205,669.20x = 25,024,973,261.42
  5. Step 5: Solve for x
    x = 25,024,973,261.42/205,669.20
  6. Step 6: Final answer
    x = 121,675.84

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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.