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Finding the Fourth Proportional to 141,340.40, 212,010.60 and 103,286.60

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Solution

The fourth proportional to 141,340.40, 212,010.60 and 103,286.60 is: 154,929.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,340.40 : 212,010.60 = 103,286.60 : x
  2. Step 2: Convert to fraction form
    141,340.40/212,010.60 = 103,286.60/x
  3. Step 3: Cross multiply
    141,340.40x = 212,010.60 × 103,286.60
  4. Step 4: Simplify right side
    141,340.40x = 21,897,854,037.96
  5. Step 5: Solve for x
    x = 21,897,854,037.96/141,340.40
  6. Step 6: Final answer
    x = 154,929.90

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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.