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Finding the Fourth Proportional to 80,392.34, 120,003 and 74,463.14

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Solution

The fourth proportional to 80,392.34, 120,003 and 74,463.14 is: 111,152.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,392.34 : 120,003 = 74,463.14 : x
  2. Step 2: Convert to fraction form
    80,392.34/120,003 = 74,463.14/x
  3. Step 3: Cross multiply
    80,392.34x = 120,003 × 74,463.14
  4. Step 4: Simplify right side
    80,392.34x = 8,935,800,189.42
  5. Step 5: Solve for x
    x = 8,935,800,189.42/80,392.34
  6. Step 6: Final answer
    x = 111,152.38

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.