Home / 123,341.50-170,212.53-66,754.09

Finding the Fourth Proportional to 123,341.50, 170,212.53 and 66,754.09

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Solution

The fourth proportional to 123,341.50, 170,212.53 and 66,754.09 is: 92,121.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,341.50 : 170,212.53 = 66,754.09 : x
  2. Step 2: Convert to fraction form
    123,341.50/170,212.53 = 66,754.09/x
  3. Step 3: Cross multiply
    123,341.50x = 170,212.53 × 66,754.09
  4. Step 4: Simplify right side
    123,341.50x = 11,362,382,546.75
  5. Step 5: Solve for x
    x = 11,362,382,546.75/123,341.50
  6. Step 6: Final answer
    x = 92,121.33

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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.