Home / 99,908.49-137,872.11-54,585.50

Finding the Fourth Proportional to 99,908.49, 137,872.11 and 54,585.50

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Solution

The fourth proportional to 99,908.49, 137,872.11 and 54,585.50 is: 75,327.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,908.49 : 137,872.11 = 54,585.50 : x
  2. Step 2: Convert to fraction form
    99,908.49/137,872.11 = 54,585.50/x
  3. Step 3: Cross multiply
    99,908.49x = 137,872.11 × 54,585.50
  4. Step 4: Simplify right side
    99,908.49x = 7,525,818,339.62
  5. Step 5: Solve for x
    x = 7,525,818,339.62/99,908.49
  6. Step 6: Final answer
    x = 75,327.11

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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.