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Finding the Fourth Proportional to 98,911, 136,497.18 and 54,198.04

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Solution

The fourth proportional to 98,911, 136,497.18 and 54,198.04 is: 74,793.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,911 : 136,497.18 = 54,198.04 : x
  2. Step 2: Convert to fraction form
    98,911/136,497.18 = 54,198.04/x
  3. Step 3: Cross multiply
    98,911x = 136,497.18 × 54,198.04
  4. Step 4: Simplify right side
    98,911x = 7,397,879,621.53
  5. Step 5: Solve for x
    x = 7,397,879,621.53/98,911
  6. Step 6: Final answer
    x = 74,793.30

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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.