Home / 123,409.98-170,305.92-66,821.36

Finding the Fourth Proportional to 123,409.98, 170,305.92 and 66,821.36

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Solution

The fourth proportional to 123,409.98, 170,305.92 and 66,821.36 is: 92,213.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,409.98 : 170,305.92 = 66,821.36 : x
  2. Step 2: Convert to fraction form
    123,409.98/170,305.92 = 66,821.36/x
  3. Step 3: Cross multiply
    123,409.98x = 170,305.92 × 66,821.36
  4. Step 4: Simplify right side
    123,409.98x = 11,380,072,338.92
  5. Step 5: Solve for x
    x = 11,380,072,338.92/123,409.98
  6. Step 6: Final answer
    x = 92,213.55

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1.5x scale

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.