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Finding the Fourth Proportional to 141,768, 212,691.41 and 61,812.96

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Solution

The fourth proportional to 141,768, 212,691.41 and 61,812.96 is: 92,736.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,768 : 212,691.41 = 61,812.96 : x
  2. Step 2: Convert to fraction form
    141,768/212,691.41 = 61,812.96/x
  3. Step 3: Cross multiply
    141,768x = 212,691.41 × 61,812.96
  4. Step 4: Simplify right side
    141,768x = 13,147,084,859.71
  5. Step 5: Solve for x
    x = 13,147,084,859.71/141,768
  6. Step 6: Final answer
    x = 92,736.62

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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.