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Finding the Fourth Proportional to 111,149.53, 153,344.48 and 72,930.17

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Solution

The fourth proportional to 111,149.53, 153,344.48 and 72,930.17 is: 100,616.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,149.53 : 153,344.48 = 72,930.17 : x
  2. Step 2: Convert to fraction form
    111,149.53/153,344.48 = 72,930.17/x
  3. Step 3: Cross multiply
    111,149.53x = 153,344.48 × 72,930.17
  4. Step 4: Simplify right side
    111,149.53x = 11,183,438,913.15
  5. Step 5: Solve for x
    x = 11,183,438,913.15/111,149.53
  6. Step 6: Final answer
    x = 100,616.16

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1.5x scale

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.