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Finding the Fourth Proportional to 186,871.05, 280,133.87 and 74,523.94

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Solution

The fourth proportional to 186,871.05, 280,133.87 and 74,523.94 is: 111,717.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,871.05 : 280,133.87 = 74,523.94 : x
  2. Step 2: Convert to fraction form
    186,871.05/280,133.87 = 74,523.94/x
  3. Step 3: Cross multiply
    186,871.05x = 280,133.87 × 74,523.94
  4. Step 4: Simplify right side
    186,871.05x = 20,876,678,646.89
  5. Step 5: Solve for x
    x = 20,876,678,646.89/186,871.05
  6. Step 6: Final answer
    x = 111,717.03

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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.