Home / 99,185.45-136,917.81-66,963.71

Finding the Fourth Proportional to 99,185.45, 136,917.81 and 66,963.71

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Solution

The fourth proportional to 99,185.45, 136,917.81 and 66,963.71 is: 92,438.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,185.45 : 136,917.81 = 66,963.71 : x
  2. Step 2: Convert to fraction form
    99,185.45/136,917.81 = 66,963.71/x
  3. Step 3: Cross multiply
    99,185.45x = 136,917.81 × 66,963.71
  4. Step 4: Simplify right side
    99,185.45x = 9,168,523,838.09
  5. Step 5: Solve for x
    x = 9,168,523,838.09/99,185.45
  6. Step 6: Final answer
    x = 92,438.20

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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.