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Finding the Fourth Proportional to 186,855.60, 280,480.67 and 87,112

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Solution

The fourth proportional to 186,855.60, 280,480.67 and 87,112 is: 130,759.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,855.60 : 280,480.67 = 87,112 : x
  2. Step 2: Convert to fraction form
    186,855.60/280,480.67 = 87,112/x
  3. Step 3: Cross multiply
    186,855.60x = 280,480.67 × 87,112
  4. Step 4: Simplify right side
    186,855.60x = 24,433,232,125.04
  5. Step 5: Solve for x
    x = 24,433,232,125.04/186,855.60
  6. Step 6: Final answer
    x = 130,759.97

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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.