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Finding the Fourth Proportional to 101,014.91, 139,406.84 and 55,692.80

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Solution

The fourth proportional to 101,014.91, 139,406.84 and 55,692.80 is: 76,859.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,014.91 : 139,406.84 = 55,692.80 : x
  2. Step 2: Convert to fraction form
    101,014.91/139,406.84 = 55,692.80/x
  3. Step 3: Cross multiply
    101,014.91x = 139,406.84 × 55,692.80
  4. Step 4: Simplify right side
    101,014.91x = 7,763,957,258.75
  5. Step 5: Solve for x
    x = 7,763,957,258.75/101,014.91
  6. Step 6: Final answer
    x = 76,859.52

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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.