Home / 99,975.30-137,966.20-54,653.82

Finding the Fourth Proportional to 99,975.30, 137,966.20 and 54,653.82

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Solution

The fourth proportional to 99,975.30, 137,966.20 and 54,653.82 is: 75,422.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,975.30 : 137,966.20 = 54,653.82 : x
  2. Step 2: Convert to fraction form
    99,975.30/137,966.20 = 54,653.82/x
  3. Step 3: Cross multiply
    99,975.30x = 137,966.20 × 54,653.82
  4. Step 4: Simplify right side
    99,975.30x = 7,540,379,860.88
  5. Step 5: Solve for x
    x = 7,540,379,860.88/99,975.30
  6. Step 6: Final answer
    x = 75,422.43

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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.