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Finding the Fourth Proportional to 139,114.80, 208,596.68 and 63,171.64

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Solution

The fourth proportional to 139,114.80, 208,596.68 and 63,171.64 is: 94,723.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,114.80 : 208,596.68 = 63,171.64 : x
  2. Step 2: Convert to fraction form
    139,114.80/208,596.68 = 63,171.64/x
  3. Step 3: Cross multiply
    139,114.80x = 208,596.68 × 63,171.64
  4. Step 4: Simplify right side
    139,114.80x = 13,177,394,374.16
  5. Step 5: Solve for x
    x = 13,177,394,374.16/139,114.80
  6. Step 6: Final answer
    x = 94,723.17

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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.