Home / 223,015.30-307,644.81-136,993.66

Finding the Fourth Proportional to 223,015.30, 307,644.81 and 136,993.66

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Solution

The fourth proportional to 223,015.30, 307,644.81 and 136,993.66 is: 188,979.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,015.30 : 307,644.81 = 136,993.66 : x
  2. Step 2: Convert to fraction form
    223,015.30/307,644.81 = 136,993.66/x
  3. Step 3: Cross multiply
    223,015.30x = 307,644.81 × 136,993.66
  4. Step 4: Simplify right side
    223,015.30x = 42,145,388,501.90
  5. Step 5: Solve for x
    x = 42,145,388,501.90/223,015.30
  6. Step 6: Final answer
    x = 188,979.81

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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.