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Finding the Fourth Proportional to 141,556.50, 212,028.50 and 66,564.26

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Solution

The fourth proportional to 141,556.50, 212,028.50 and 66,564.26 is: 99,702.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,556.50 : 212,028.50 = 66,564.26 : x
  2. Step 2: Convert to fraction form
    141,556.50/212,028.50 = 66,564.26/x
  3. Step 3: Cross multiply
    141,556.50x = 212,028.50 × 66,564.26
  4. Step 4: Simplify right side
    141,556.50x = 14,113,520,201.41
  5. Step 5: Solve for x
    x = 14,113,520,201.41/141,556.50
  6. Step 6: Final answer
    x = 99,702.38

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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.