Home / 171,815.66-257,619.94-77,028.70

Finding the Fourth Proportional to 171,815.66, 257,619.94 and 77,028.70

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Solution

The fourth proportional to 171,815.66, 257,619.94 and 77,028.70 is: 115,496.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,815.66 : 257,619.94 = 77,028.70 : x
  2. Step 2: Convert to fraction form
    171,815.66/257,619.94 = 77,028.70/x
  3. Step 3: Cross multiply
    171,815.66x = 257,619.94 × 77,028.70
  4. Step 4: Simplify right side
    171,815.66x = 19,844,129,072.28
  5. Step 5: Solve for x
    x = 19,844,129,072.28/171,815.66
  6. Step 6: Final answer
    x = 115,496.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.