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Finding the Fourth Proportional to 186,873.59, 280,687.71 and 112,135.70

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Solution

The fourth proportional to 186,873.59, 280,687.71 and 112,135.70 is: 168,429.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,873.59 : 280,687.71 = 112,135.70 : x
  2. Step 2: Convert to fraction form
    186,873.59/280,687.71 = 112,135.70/x
  3. Step 3: Cross multiply
    186,873.59x = 280,687.71 × 112,135.70
  4. Step 4: Simplify right side
    186,873.59x = 31,475,112,842.25
  5. Step 5: Solve for x
    x = 31,475,112,842.25/186,873.59
  6. Step 6: Final answer
    x = 168,429.97

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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.