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Finding the Fourth Proportional to 141,963.60, 212,799.60 and 82,768.80

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Solution

The fourth proportional to 141,963.60, 212,799.60 and 82,768.80 is: 124,068.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,963.60 : 212,799.60 = 82,768.80 : x
  2. Step 2: Convert to fraction form
    141,963.60/212,799.60 = 82,768.80/x
  3. Step 3: Cross multiply
    141,963.60x = 212,799.60 × 82,768.80
  4. Step 4: Simplify right side
    141,963.60x = 17,613,167,532.48
  5. Step 5: Solve for x
    x = 17,613,167,532.48/141,963.60
  6. Step 6: Final answer
    x = 124,068.19

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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.