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Finding the Fourth Proportional to 102,800.94, 141,821.85 and 68,820.37

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Solution

The fourth proportional to 102,800.94, 141,821.85 and 68,820.37 is: 94,943.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,800.94 : 141,821.85 = 68,820.37 : x
  2. Step 2: Convert to fraction form
    102,800.94/141,821.85 = 68,820.37/x
  3. Step 3: Cross multiply
    102,800.94x = 141,821.85 × 68,820.37
  4. Step 4: Simplify right side
    102,800.94x = 9,760,232,497.40
  5. Step 5: Solve for x
    x = 9,760,232,497.40/102,800.94
  6. Step 6: Final answer
    x = 94,943.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.