Home / 138,621.60-191,296.62-74,958.84

Finding the Fourth Proportional to 138,621.60, 191,296.62 and 74,958.84

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Solution

The fourth proportional to 138,621.60, 191,296.62 and 74,958.84 is: 103,442.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,621.60 : 191,296.62 = 74,958.84 : x
  2. Step 2: Convert to fraction form
    138,621.60/191,296.62 = 74,958.84/x
  3. Step 3: Cross multiply
    138,621.60x = 191,296.62 × 74,958.84
  4. Step 4: Simplify right side
    138,621.60x = 14,339,372,731.12
  5. Step 5: Solve for x
    x = 14,339,372,731.12/138,621.60
  6. Step 6: Final answer
    x = 103,442.56

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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.