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Finding the Fourth Proportional to 125,166.25, 172,729.43 and 68,578.93

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Solution

The fourth proportional to 125,166.25, 172,729.43 and 68,578.93 is: 94,638.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,166.25 : 172,729.43 = 68,578.93 : x
  2. Step 2: Convert to fraction form
    125,166.25/172,729.43 = 68,578.93/x
  3. Step 3: Cross multiply
    125,166.25x = 172,729.43 × 68,578.93
  4. Step 4: Simplify right side
    125,166.25x = 11,845,599,488.91
  5. Step 5: Solve for x
    x = 11,845,599,488.91/125,166.25
  6. Step 6: Final answer
    x = 94,638.93

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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.