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Finding the Fourth Proportional to 101,578.80, 140,109.37 and 69,692.34

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Solution

The fourth proportional to 101,578.80, 140,109.37 and 69,692.34 is: 96,127.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,578.80 : 140,109.37 = 69,692.34 : x
  2. Step 2: Convert to fraction form
    101,578.80/140,109.37 = 69,692.34/x
  3. Step 3: Cross multiply
    101,578.80x = 140,109.37 × 69,692.34
  4. Step 4: Simplify right side
    101,578.80x = 9,764,549,676.99
  5. Step 5: Solve for x
    x = 9,764,549,676.99/101,578.80
  6. Step 6: Final answer
    x = 96,127.83

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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.