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Finding the Fourth Proportional to 139,175.66, 208,770.51 and 39,343.02

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Solution

The fourth proportional to 139,175.66, 208,770.51 and 39,343.02 is: 59,016.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,175.66 : 208,770.51 = 39,343.02 : x
  2. Step 2: Convert to fraction form
    139,175.66/208,770.51 = 39,343.02/x
  3. Step 3: Cross multiply
    139,175.66x = 208,770.51 × 39,343.02
  4. Step 4: Simplify right side
    139,175.66x = 8,213,662,350.34
  5. Step 5: Solve for x
    x = 8,213,662,350.34/139,175.66
  6. Step 6: Final answer
    x = 59,016.51

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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.