Home / 115,252.80-158,992.34-77,021.75

Finding the Fourth Proportional to 115,252.80, 158,992.34 and 77,021.75

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Solution

The fourth proportional to 115,252.80, 158,992.34 and 77,021.75 is: 106,252.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,252.80 : 158,992.34 = 77,021.75 : x
  2. Step 2: Convert to fraction form
    115,252.80/158,992.34 = 77,021.75/x
  3. Step 3: Cross multiply
    115,252.80x = 158,992.34 × 77,021.75
  4. Step 4: Simplify right side
    115,252.80x = 12,245,867,083.32
  5. Step 5: Solve for x
    x = 12,245,867,083.32/115,252.80
  6. Step 6: Final answer
    x = 106,252.23

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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.