Home / 205,580.10-308,486.78-81,008.58

Finding the Fourth Proportional to 205,580.10, 308,486.78 and 81,008.58

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Solution

The fourth proportional to 205,580.10, 308,486.78 and 81,008.58 is: 121,558.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,580.10 : 308,486.78 = 81,008.58 : x
  2. Step 2: Convert to fraction form
    205,580.10/308,486.78 = 81,008.58/x
  3. Step 3: Cross multiply
    205,580.10x = 308,486.78 × 81,008.58
  4. Step 4: Simplify right side
    205,580.10x = 24,990,075,996.57
  5. Step 5: Solve for x
    x = 24,990,075,996.57/205,580.10
  6. Step 6: Final answer
    x = 121,558.83

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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.