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Finding the Fourth Proportional to 125,379.40, 173,023.78 and 68,791.18

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Solution

The fourth proportional to 125,379.40, 173,023.78 and 68,791.18 is: 94,931.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,379.40 : 173,023.78 = 68,791.18 : x
  2. Step 2: Convert to fraction form
    125,379.40/173,023.78 = 68,791.18/x
  3. Step 3: Cross multiply
    125,379.40x = 173,023.78 × 68,791.18
  4. Step 4: Simplify right side
    125,379.40x = 11,902,509,994.26
  5. Step 5: Solve for x
    x = 11,902,509,994.26/125,379.40
  6. Step 6: Final answer
    x = 94,931.94

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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.