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Finding the Fourth Proportional to 99,793.42, 137,714.90 and 68,017.82

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Solution

The fourth proportional to 99,793.42, 137,714.90 and 68,017.82 is: 93,864.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,793.42 : 137,714.90 = 68,017.82 : x
  2. Step 2: Convert to fraction form
    99,793.42/137,714.90 = 68,017.82/x
  3. Step 3: Cross multiply
    99,793.42x = 137,714.90 × 68,017.82
  4. Step 4: Simplify right side
    99,793.42x = 9,367,066,250.85
  5. Step 5: Solve for x
    x = 9,367,066,250.85/99,793.42
  6. Step 6: Final answer
    x = 93,864.57

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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.