Home / 99,772.84-137,684.46-54,451.72

Finding the Fourth Proportional to 99,772.84, 137,684.46 and 54,451.72

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Solution

The fourth proportional to 99,772.84, 137,684.46 and 54,451.72 is: 75,142.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,772.84 : 137,684.46 = 54,451.72 : x
  2. Step 2: Convert to fraction form
    99,772.84/137,684.46 = 54,451.72/x
  3. Step 3: Cross multiply
    99,772.84x = 137,684.46 × 54,451.72
  4. Step 4: Simplify right side
    99,772.84x = 7,497,155,664.27
  5. Step 5: Solve for x
    x = 7,497,155,664.27/99,772.84
  6. Step 6: Final answer
    x = 75,142.25

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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.