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Finding the Fourth Proportional to 74,786.03, 102,994.76 and 73,153.07

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Solution

The fourth proportional to 74,786.03, 102,994.76 and 73,153.07 is: 100,745.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,786.03 : 102,994.76 = 73,153.07 : x
  2. Step 2: Convert to fraction form
    74,786.03/102,994.76 = 73,153.07/x
  3. Step 3: Cross multiply
    74,786.03x = 102,994.76 × 73,153.07
  4. Step 4: Simplify right side
    74,786.03x = 7,534,382,555.82
  5. Step 5: Solve for x
    x = 7,534,382,555.82/74,786.03
  6. Step 6: Final answer
    x = 100,745.86

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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.