Home / 123,342.70-170,212.94-66,754.08

Finding the Fourth Proportional to 123,342.70, 170,212.94 and 66,754.08

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Solution

The fourth proportional to 123,342.70, 170,212.94 and 66,754.08 is: 92,120.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,342.70 : 170,212.94 = 66,754.08 : x
  2. Step 2: Convert to fraction form
    123,342.70/170,212.94 = 66,754.08/x
  3. Step 3: Cross multiply
    123,342.70x = 170,212.94 × 66,754.08
  4. Step 4: Simplify right side
    123,342.70x = 11,362,408,213.80
  5. Step 5: Solve for x
    x = 11,362,408,213.80/123,342.70
  6. Step 6: Final answer
    x = 92,120.64

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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.