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Finding the Fourth Proportional to 99,493.62, 137,303.81 and 54,173.51

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Solution

The fourth proportional to 99,493.62, 137,303.81 and 54,173.51 is: 74,760.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,493.62 : 137,303.81 = 54,173.51 : x
  2. Step 2: Convert to fraction form
    99,493.62/137,303.81 = 54,173.51/x
  3. Step 3: Cross multiply
    99,493.62x = 137,303.81 × 54,173.51
  4. Step 4: Simplify right side
    99,493.62x = 7,438,229,084.73
  5. Step 5: Solve for x
    x = 7,438,229,084.73/99,493.62
  6. Step 6: Final answer
    x = 74,760.87

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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.