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Finding the Fourth Proportional to 111,963.72, 154,506.78 and 60,975.30

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Solution

The fourth proportional to 111,963.72, 154,506.78 and 60,975.30 is: 84,144.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,963.72 : 154,506.78 = 60,975.30 : x
  2. Step 2: Convert to fraction form
    111,963.72/154,506.78 = 60,975.30/x
  3. Step 3: Cross multiply
    111,963.72x = 154,506.78 × 60,975.30
  4. Step 4: Simplify right side
    111,963.72x = 9,421,097,262.53
  5. Step 5: Solve for x
    x = 9,421,097,262.53/111,963.72
  6. Step 6: Final answer
    x = 84,144.20

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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.