Home / 123,343.21-170,213.34-66,754.63

Finding the Fourth Proportional to 123,343.21, 170,213.34 and 66,754.63

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Solution

The fourth proportional to 123,343.21, 170,213.34 and 66,754.63 is: 92,121.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,343.21 : 170,213.34 = 66,754.63 : x
  2. Step 2: Convert to fraction form
    123,343.21/170,213.34 = 66,754.63/x
  3. Step 3: Cross multiply
    123,343.21x = 170,213.34 × 66,754.63
  4. Step 4: Simplify right side
    123,343.21x = 11,362,528,532.76
  5. Step 5: Solve for x
    x = 11,362,528,532.76/123,343.21
  6. Step 6: Final answer
    x = 92,121.23

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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.