Home / 123,491.45-170,418.12-66,902.82

Finding the Fourth Proportional to 123,491.45, 170,418.12 and 66,902.82

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Solution

The fourth proportional to 123,491.45, 170,418.12 and 66,902.82 is: 92,325.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,491.45 : 170,418.12 = 66,902.82 : x
  2. Step 2: Convert to fraction form
    123,491.45/170,418.12 = 66,902.82/x
  3. Step 3: Cross multiply
    123,491.45x = 170,418.12 × 66,902.82
  4. Step 4: Simplify right side
    123,491.45x = 11,401,452,807.10
  5. Step 5: Solve for x
    x = 11,401,452,807.10/123,491.45
  6. Step 6: Final answer
    x = 92,325.85

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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.