Home / 123,325.50-170,190.40-66,738.10

Finding the Fourth Proportional to 123,325.50, 170,190.40 and 66,738.10

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Solution

The fourth proportional to 123,325.50, 170,190.40 and 66,738.10 is: 92,099.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,325.50 : 170,190.40 = 66,738.10 : x
  2. Step 2: Convert to fraction form
    123,325.50/170,190.40 = 66,738.10/x
  3. Step 3: Cross multiply
    123,325.50x = 170,190.40 × 66,738.10
  4. Step 4: Simplify right side
    123,325.50x = 11,358,183,934.24
  5. Step 5: Solve for x
    x = 11,358,183,934.24/123,325.50
  6. Step 6: Final answer
    x = 92,099.23

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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.