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Finding the Fourth Proportional to 141,878.46, 212,880.38 and 74,394.38

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Solution

The fourth proportional to 141,878.46, 212,880.38 and 74,394.38 is: 111,624.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,878.46 : 212,880.38 = 74,394.38 : x
  2. Step 2: Convert to fraction form
    141,878.46/212,880.38 = 74,394.38/x
  3. Step 3: Cross multiply
    141,878.46x = 212,880.38 × 74,394.38
  4. Step 4: Simplify right side
    141,878.46x = 15,837,103,884.26
  5. Step 5: Solve for x
    x = 15,837,103,884.26/141,878.46
  6. Step 6: Final answer
    x = 111,624.44

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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.