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Finding the Fourth Proportional to 114,489.40, 171,654.10 and 67,718.20

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Solution

The fourth proportional to 114,489.40, 171,654.10 and 67,718.20 is: 101,529.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,489.40 : 171,654.10 = 67,718.20 : x
  2. Step 2: Convert to fraction form
    114,489.40/171,654.10 = 67,718.20/x
  3. Step 3: Cross multiply
    114,489.40x = 171,654.10 × 67,718.20
  4. Step 4: Simplify right side
    114,489.40x = 11,624,106,674.62
  5. Step 5: Solve for x
    x = 11,624,106,674.62/114,489.40
  6. Step 6: Final answer
    x = 101,529.98

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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.