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Finding the Fourth Proportional to 104,486.81, 155,629.22 and 102,299.81

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Solution

The fourth proportional to 104,486.81, 155,629.22 and 102,299.81 is: 152,371.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,486.81 : 155,629.22 = 102,299.81 : x
  2. Step 2: Convert to fraction form
    104,486.81/155,629.22 = 102,299.81/x
  3. Step 3: Cross multiply
    104,486.81x = 155,629.22 × 102,299.81
  4. Step 4: Simplify right side
    104,486.81x = 15,920,839,636.45
  5. Step 5: Solve for x
    x = 15,920,839,636.45/104,486.81
  6. Step 6: Final answer
    x = 152,371.76

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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.