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Finding the Fourth Proportional to 141,670.82, 212,556.80 and 66,801.61

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Solution

The fourth proportional to 141,670.82, 212,556.80 and 66,801.61 is: 100,226.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,670.82 : 212,556.80 = 66,801.61 : x
  2. Step 2: Convert to fraction form
    141,670.82/212,556.80 = 66,801.61/x
  3. Step 3: Cross multiply
    141,670.82x = 212,556.80 × 66,801.61
  4. Step 4: Simplify right side
    141,670.82x = 14,199,135,393.66
  5. Step 5: Solve for x
    x = 14,199,135,393.66/141,670.82
  6. Step 6: Final answer
    x = 100,226.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.