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Finding the Fourth Proportional to 141,915.42, 212,874 and 42,076.56

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Solution

The fourth proportional to 141,915.42, 212,874 and 42,076.56 is: 63,115.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,915.42 : 212,874 = 42,076.56 : x
  2. Step 2: Convert to fraction form
    141,915.42/212,874 = 42,076.56/x
  3. Step 3: Cross multiply
    141,915.42x = 212,874 × 42,076.56
  4. Step 4: Simplify right side
    141,915.42x = 8,957,005,633.44
  5. Step 5: Solve for x
    x = 8,957,005,633.44/141,915.42
  6. Step 6: Final answer
    x = 63,115.10

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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.