Home / 149,660.46-206,532.05-81,678.87

Finding the Fourth Proportional to 149,660.46, 206,532.05 and 81,678.87

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Solution

The fourth proportional to 149,660.46, 206,532.05 and 81,678.87 is: 112,717.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,660.46 : 206,532.05 = 81,678.87 : x
  2. Step 2: Convert to fraction form
    149,660.46/206,532.05 = 81,678.87/x
  3. Step 3: Cross multiply
    149,660.46x = 206,532.05 × 81,678.87
  4. Step 4: Simplify right side
    149,660.46x = 16,869,304,054.39
  5. Step 5: Solve for x
    x = 16,869,304,054.39/149,660.46
  6. Step 6: Final answer
    x = 112,717.17

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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.