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Finding the Fourth Proportional to 104,695.57, 155,859.28 and 104,072.78

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Solution

The fourth proportional to 104,695.57, 155,859.28 and 104,072.78 is: 154,932.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,695.57 : 155,859.28 = 104,072.78 : x
  2. Step 2: Convert to fraction form
    104,695.57/155,859.28 = 104,072.78/x
  3. Step 3: Cross multiply
    104,695.57x = 155,859.28 × 104,072.78
  4. Step 4: Simplify right side
    104,695.57x = 16,220,709,419.63
  5. Step 5: Solve for x
    x = 16,220,709,419.63/104,695.57
  6. Step 6: Final answer
    x = 154,932.15

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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.