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Finding the Fourth Proportional to 139,317, 208,942.75 and 44,555.64

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Solution

The fourth proportional to 139,317, 208,942.75 and 44,555.64 is: 66,822.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,317 : 208,942.75 = 44,555.64 : x
  2. Step 2: Convert to fraction form
    139,317/208,942.75 = 44,555.64/x
  3. Step 3: Cross multiply
    139,317x = 208,942.75 × 44,555.64
  4. Step 4: Simplify right side
    139,317x = 9,309,577,949.61
  5. Step 5: Solve for x
    x = 9,309,577,949.61/139,317
  6. Step 6: Final answer
    x = 66,822.99

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1.5x scale

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.