Home / 125,815.82-188,723.72-86,252.98

Finding the Fourth Proportional to 125,815.82, 188,723.72 and 86,252.98

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Solution

The fourth proportional to 125,815.82, 188,723.72 and 86,252.98 is: 129,379.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,815.82 : 188,723.72 = 86,252.98 : x
  2. Step 2: Convert to fraction form
    125,815.82/188,723.72 = 86,252.98/x
  3. Step 3: Cross multiply
    125,815.82x = 188,723.72 × 86,252.98
  4. Step 4: Simplify right side
    125,815.82x = 16,277,983,246.69
  5. Step 5: Solve for x
    x = 16,277,983,246.69/125,815.82
  6. Step 6: Final answer
    x = 129,379.46

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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.