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Finding the Fourth Proportional to 125,518.61, 173,216.81 and 68,930.39

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Solution

The fourth proportional to 125,518.61, 173,216.81 and 68,930.39 is: 95,124.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,518.61 : 173,216.81 = 68,930.39 : x
  2. Step 2: Convert to fraction form
    125,518.61/173,216.81 = 68,930.39/x
  3. Step 3: Cross multiply
    125,518.61x = 173,216.81 × 68,930.39
  4. Step 4: Simplify right side
    125,518.61x = 11,939,901,923.20
  5. Step 5: Solve for x
    x = 11,939,901,923.20/125,518.61
  6. Step 6: Final answer
    x = 95,124.56

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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.