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Finding the Fourth Proportional to 139,014.02, 191,839.44 and 75,351.82

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Solution

The fourth proportional to 139,014.02, 191,839.44 and 75,351.82 is: 103,985.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,014.02 : 191,839.44 = 75,351.82 : x
  2. Step 2: Convert to fraction form
    139,014.02/191,839.44 = 75,351.82/x
  3. Step 3: Cross multiply
    139,014.02x = 191,839.44 × 75,351.82
  4. Step 4: Simplify right side
    139,014.02x = 14,455,450,951.78
  5. Step 5: Solve for x
    x = 14,455,450,951.78/139,014.02
  6. Step 6: Final answer
    x = 103,985.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.