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Finding the Fourth Proportional to 140,968, 194,517.96 and 77,289.04

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Solution

The fourth proportional to 140,968, 194,517.96 and 77,289.04 is: 106,649.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,968 : 194,517.96 = 77,289.04 : x
  2. Step 2: Convert to fraction form
    140,968/194,517.96 = 77,289.04/x
  3. Step 3: Cross multiply
    140,968x = 194,517.96 × 77,289.04
  4. Step 4: Simplify right side
    140,968x = 15,034,106,391.16
  5. Step 5: Solve for x
    x = 15,034,106,391.16/140,968
  6. Step 6: Final answer
    x = 106,649.07

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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.