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Finding the Fourth Proportional to 111,630.74, 154,049.80 and 60,643.03

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Solution

The fourth proportional to 111,630.74, 154,049.80 and 60,643.03 is: 83,687.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,630.74 : 154,049.80 = 60,643.03 : x
  2. Step 2: Convert to fraction form
    111,630.74/154,049.80 = 60,643.03/x
  3. Step 3: Cross multiply
    111,630.74x = 154,049.80 × 60,643.03
  4. Step 4: Simplify right side
    111,630.74x = 9,342,046,339.68
  5. Step 5: Solve for x
    x = 9,342,046,339.68/111,630.74
  6. Step 6: Final answer
    x = 83,687.04

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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.