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Finding the Fourth Proportional to 114,499.40, 171,669.10 and 67,728.20

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Solution

The fourth proportional to 114,499.40, 171,669.10 and 67,728.20 is: 101,544.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,499.40 : 171,669.10 = 67,728.20 : x
  2. Step 2: Convert to fraction form
    114,499.40/171,669.10 = 67,728.20/x
  3. Step 3: Cross multiply
    114,499.40x = 171,669.10 × 67,728.20
  4. Step 4: Simplify right side
    114,499.40x = 11,626,839,138.62
  5. Step 5: Solve for x
    x = 11,626,839,138.62/114,499.40
  6. Step 6: Final answer
    x = 101,544.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.