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Finding the Fourth Proportional to 122,790.62, 169,450.81 and 69,075.68

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Solution

The fourth proportional to 122,790.62, 169,450.81 and 69,075.68 is: 95,324.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,790.62 : 169,450.81 = 69,075.68 : x
  2. Step 2: Convert to fraction form
    122,790.62/169,450.81 = 69,075.68/x
  3. Step 3: Cross multiply
    122,790.62x = 169,450.81 × 69,075.68
  4. Step 4: Simplify right side
    122,790.62x = 11,704,929,927.30
  5. Step 5: Solve for x
    x = 11,704,929,927.30/122,790.62
  6. Step 6: Final answer
    x = 95,324.30

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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.