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Finding the Fourth Proportional to 141,873.88, 212,823.12 and 40,672.39

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Solution

The fourth proportional to 141,873.88, 212,823.12 and 40,672.39 is: 61,012.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,873.88 : 212,823.12 = 40,672.39 : x
  2. Step 2: Convert to fraction form
    141,873.88/212,823.12 = 40,672.39/x
  3. Step 3: Cross multiply
    141,873.88x = 212,823.12 × 40,672.39
  4. Step 4: Simplify right side
    141,873.88x = 8,656,025,142.06
  5. Step 5: Solve for x
    x = 8,656,025,142.06/141,873.88
  6. Step 6: Final answer
    x = 61,012.11

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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.