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Finding the Fourth Proportional to 106,362.69, 159,599.61 and 68,913.03

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Solution

The fourth proportional to 106,362.69, 159,599.61 and 68,913.03 is: 103,405.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,362.69 : 159,599.61 = 68,913.03 : x
  2. Step 2: Convert to fraction form
    106,362.69/159,599.61 = 68,913.03/x
  3. Step 3: Cross multiply
    106,362.69x = 159,599.61 × 68,913.03
  4. Step 4: Simplify right side
    106,362.69x = 10,998,492,711.92
  5. Step 5: Solve for x
    x = 10,998,492,711.92/106,362.69
  6. Step 6: Final answer
    x = 103,405.55

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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.