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Finding the Fourth Proportional to 139,165.53, 208,759.56 and 39,326.55

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Solution

The fourth proportional to 139,165.53, 208,759.56 and 39,326.55 is: 58,993.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,165.53 : 208,759.56 = 39,326.55 : x
  2. Step 2: Convert to fraction form
    139,165.53/208,759.56 = 39,326.55/x
  3. Step 3: Cross multiply
    139,165.53x = 208,759.56 × 39,326.55
  4. Step 4: Simplify right side
    139,165.53x = 8,209,793,274.32
  5. Step 5: Solve for x
    x = 8,209,793,274.32/139,165.53
  6. Step 6: Final answer
    x = 58,993.01

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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.