Home / 123,621.75-186,359.17-115,382.48

Finding the Fourth Proportional to 123,621.75, 186,359.17 and 115,382.48

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Solution

The fourth proportional to 123,621.75, 186,359.17 and 115,382.48 is: 173,938.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,621.75 : 186,359.17 = 115,382.48 : x
  2. Step 2: Convert to fraction form
    123,621.75/186,359.17 = 115,382.48/x
  3. Step 3: Cross multiply
    123,621.75x = 186,359.17 × 115,382.48
  4. Step 4: Simplify right side
    123,621.75x = 21,502,583,205.34
  5. Step 5: Solve for x
    x = 21,502,583,205.34/123,621.75
  6. Step 6: Final answer
    x = 173,938.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.