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Finding the Fourth Proportional to 101,855.98, 140,476.46 and 76,418.79

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Solution

The fourth proportional to 101,855.98, 140,476.46 and 76,418.79 is: 105,394.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,855.98 : 140,476.46 = 76,418.79 : x
  2. Step 2: Convert to fraction form
    101,855.98/140,476.46 = 76,418.79/x
  3. Step 3: Cross multiply
    101,855.98x = 140,476.46 × 76,418.79
  4. Step 4: Simplify right side
    101,855.98x = 10,735,040,394.30
  5. Step 5: Solve for x
    x = 10,735,040,394.30/101,855.98
  6. Step 6: Final answer
    x = 105,394.31

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1.5x scale

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.