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Finding the Fourth Proportional to 141,807.67, 212,710.73 and 81,797.24

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Solution

The fourth proportional to 141,807.67, 212,710.73 and 81,797.24 is: 122,695.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,807.67 : 212,710.73 = 81,797.24 : x
  2. Step 2: Convert to fraction form
    141,807.67/212,710.73 = 81,797.24/x
  3. Step 3: Cross multiply
    141,807.67x = 212,710.73 × 81,797.24
  4. Step 4: Simplify right side
    141,807.67x = 17,399,150,755.18
  5. Step 5: Solve for x
    x = 17,399,150,755.18/141,807.67
  6. Step 6: Final answer
    x = 122,695.42

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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.