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Finding the Fourth Proportional to 123,491.88, 170,419.61 and 66,903.26

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Solution

The fourth proportional to 123,491.88, 170,419.61 and 66,903.26 is: 92,326.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,491.88 : 170,419.61 = 66,903.26 : x
  2. Step 2: Convert to fraction form
    123,491.88/170,419.61 = 66,903.26/x
  3. Step 3: Cross multiply
    123,491.88x = 170,419.61 × 66,903.26
  4. Step 4: Simplify right side
    123,491.88x = 11,401,626,792.09
  5. Step 5: Solve for x
    x = 11,401,626,792.09/123,491.88
  6. Step 6: Final answer
    x = 92,326.94

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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.