Home / 123,172.09-169,977.34-66,583.47

Finding the Fourth Proportional to 123,172.09, 169,977.34 and 66,583.47

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Solution

The fourth proportional to 123,172.09, 169,977.34 and 66,583.47 is: 91,885.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,172.09 : 169,977.34 = 66,583.47 : x
  2. Step 2: Convert to fraction form
    123,172.09/169,977.34 = 66,583.47/x
  3. Step 3: Cross multiply
    123,172.09x = 169,977.34 × 66,583.47
  4. Step 4: Simplify right side
    123,172.09x = 11,317,680,508.56
  5. Step 5: Solve for x
    x = 11,317,680,508.56/123,172.09
  6. Step 6: Final answer
    x = 91,885.10

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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.