Home / 123,317.17-170,178.14-66,728.54

Finding the Fourth Proportional to 123,317.17, 170,178.14 and 66,728.54

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Solution

The fourth proportional to 123,317.17, 170,178.14 and 66,728.54 is: 92,085.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,317.17 : 170,178.14 = 66,728.54 : x
  2. Step 2: Convert to fraction form
    123,317.17/170,178.14 = 66,728.54/x
  3. Step 3: Cross multiply
    123,317.17x = 170,178.14 × 66,728.54
  4. Step 4: Simplify right side
    123,317.17x = 11,355,739,414.38
  5. Step 5: Solve for x
    x = 11,355,739,414.38/123,317.17
  6. Step 6: Final answer
    x = 92,085.63

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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.