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Finding the Fourth Proportional to 125,201.73, 172,782.81 and 68,613.11

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Solution

The fourth proportional to 125,201.73, 172,782.81 and 68,613.11 is: 94,688.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,201.73 : 172,782.81 = 68,613.11 : x
  2. Step 2: Convert to fraction form
    125,201.73/172,782.81 = 68,613.11/x
  3. Step 3: Cross multiply
    125,201.73x = 172,782.81 × 68,613.11
  4. Step 4: Simplify right side
    125,201.73x = 11,855,165,084.73
  5. Step 5: Solve for x
    x = 11,855,165,084.73/125,201.73
  6. Step 6: Final answer
    x = 94,688.51

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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.