Home / 123,619.07-186,355.11-115,379.79

Finding the Fourth Proportional to 123,619.07, 186,355.11 and 115,379.79

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Solution

The fourth proportional to 123,619.07, 186,355.11 and 115,379.79 is: 173,934.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,619.07 : 186,355.11 = 115,379.79 : x
  2. Step 2: Convert to fraction form
    123,619.07/186,355.11 = 115,379.79/x
  3. Step 3: Cross multiply
    123,619.07x = 186,355.11 × 115,379.79
  4. Step 4: Simplify right side
    123,619.07x = 21,501,613,457.23
  5. Step 5: Solve for x
    x = 21,501,613,457.23/123,619.07
  6. Step 6: Final answer
    x = 173,934.44

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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.