Home / 123,501.20-170,431.80-66,912.56

Finding the Fourth Proportional to 123,501.20, 170,431.80 and 66,912.56

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Solution

The fourth proportional to 123,501.20, 170,431.80 and 66,912.56 is: 92,339.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,501.20 : 170,431.80 = 66,912.56 : x
  2. Step 2: Convert to fraction form
    123,501.20/170,431.80 = 66,912.56/x
  3. Step 3: Cross multiply
    123,501.20x = 170,431.80 × 66,912.56
  4. Step 4: Simplify right side
    123,501.20x = 11,404,028,043.41
  5. Step 5: Solve for x
    x = 11,404,028,043.41/123,501.20
  6. Step 6: Final answer
    x = 92,339.41

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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.