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Finding the Fourth Proportional to 139,228.62, 208,489.65 and 116,680.02

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Solution

The fourth proportional to 139,228.62, 208,489.65 and 116,680.02 is: 174,723.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,228.62 : 208,489.65 = 116,680.02 : x
  2. Step 2: Convert to fraction form
    139,228.62/208,489.65 = 116,680.02/x
  3. Step 3: Cross multiply
    139,228.62x = 208,489.65 × 116,680.02
  4. Step 4: Simplify right side
    139,228.62x = 24,326,576,531.79
  5. Step 5: Solve for x
    x = 24,326,576,531.79/139,228.62
  6. Step 6: Final answer
    x = 174,723.97

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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.