Home / 99,867.99-137,821.10-54,548.64

Finding the Fourth Proportional to 99,867.99, 137,821.10 and 54,548.64

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Solution

The fourth proportional to 99,867.99, 137,821.10 and 54,548.64 is: 75,278.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,867.99 : 137,821.10 = 54,548.64 : x
  2. Step 2: Convert to fraction form
    99,867.99/137,821.10 = 54,548.64/x
  3. Step 3: Cross multiply
    99,867.99x = 137,821.10 × 54,548.64
  4. Step 4: Simplify right side
    99,867.99x = 7,517,953,295.56
  5. Step 5: Solve for x
    x = 7,517,953,295.56/99,867.99
  6. Step 6: Final answer
    x = 75,278.91

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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.