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Finding the Fourth Proportional to 186,039.60, 279,053.08 and 80,858.56

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Solution

The fourth proportional to 186,039.60, 279,053.08 and 80,858.56 is: 121,285.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,039.60 : 279,053.08 = 80,858.56 : x
  2. Step 2: Convert to fraction form
    186,039.60/279,053.08 = 80,858.56/x
  3. Step 3: Cross multiply
    186,039.60x = 279,053.08 × 80,858.56
  4. Step 4: Simplify right side
    186,039.60x = 22,563,830,212.36
  5. Step 5: Solve for x
    x = 22,563,830,212.36/186,039.60
  6. Step 6: Final answer
    x = 121,285.09

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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.