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Finding the Fourth Proportional to 125,518.62, 173,216.80 and 68,930.40

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Solution

The fourth proportional to 125,518.62, 173,216.80 and 68,930.40 is: 95,124.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,518.62 : 173,216.80 = 68,930.40 : x
  2. Step 2: Convert to fraction form
    125,518.62/173,216.80 = 68,930.40/x
  3. Step 3: Cross multiply
    125,518.62x = 173,216.80 × 68,930.40
  4. Step 4: Simplify right side
    125,518.62x = 11,939,903,310.72
  5. Step 5: Solve for x
    x = 11,939,903,310.72/125,518.62
  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.