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Finding the Fourth Proportional to 139,994.54, 193,208.86 and 79,574.26

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Solution

The fourth proportional to 139,994.54, 193,208.86 and 79,574.26 is: 109,821.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,994.54 : 193,208.86 = 79,574.26 : x
  2. Step 2: Convert to fraction form
    139,994.54/193,208.86 = 79,574.26/x
  3. Step 3: Cross multiply
    139,994.54x = 193,208.86 × 79,574.26
  4. Step 4: Simplify right side
    139,994.54x = 15,374,452,059.94
  5. Step 5: Solve for x
    x = 15,374,452,059.94/139,994.54
  6. Step 6: Final answer
    x = 109,821.80

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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.