Home / 100,014.77-138,020.38-54,692.79

Finding the Fourth Proportional to 100,014.77, 138,020.38 and 54,692.79

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Solution

The fourth proportional to 100,014.77, 138,020.38 and 54,692.79 is: 75,476.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,014.77 : 138,020.38 = 54,692.79 : x
  2. Step 2: Convert to fraction form
    100,014.77/138,020.38 = 54,692.79/x
  3. Step 3: Cross multiply
    100,014.77x = 138,020.38 × 54,692.79
  4. Step 4: Simplify right side
    100,014.77x = 7,548,718,968.96
  5. Step 5: Solve for x
    x = 7,548,718,968.96/100,014.77
  6. Step 6: Final answer
    x = 75,476.04

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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.