Home / 212,371.87-293,067.80-115,571.61

Finding the Fourth Proportional to 212,371.87, 293,067.80 and 115,571.61

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Solution

The fourth proportional to 212,371.87, 293,067.80 and 115,571.61 is: 159,485.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,371.87 : 293,067.80 = 115,571.61 : x
  2. Step 2: Convert to fraction form
    212,371.87/293,067.80 = 115,571.61/x
  3. Step 3: Cross multiply
    212,371.87x = 293,067.80 × 115,571.61
  4. Step 4: Simplify right side
    212,371.87x = 33,870,316,019.82
  5. Step 5: Solve for x
    x = 33,870,316,019.82/212,371.87
  6. Step 6: Final answer
    x = 159,485.89

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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.