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Finding the Fourth Proportional to 186,786.60, 280,216.35 and 74,447.70

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Solution

The fourth proportional to 186,786.60, 280,216.35 and 74,447.70 is: 111,686.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,786.60 : 280,216.35 = 74,447.70 : x
  2. Step 2: Convert to fraction form
    186,786.60/280,216.35 = 74,447.70/x
  3. Step 3: Cross multiply
    186,786.60x = 280,216.35 × 74,447.70
  4. Step 4: Simplify right side
    186,786.60x = 20,861,462,759.90
  5. Step 5: Solve for x
    x = 20,861,462,759.90/186,786.60
  6. Step 6: Final answer
    x = 111,686.08

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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.