Home / 142,135.88-196,164.72-80,896.96

Finding the Fourth Proportional to 142,135.88, 196,164.72 and 80,896.96

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Solution

The fourth proportional to 142,135.88, 196,164.72 and 80,896.96 is: 111,647.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,135.88 : 196,164.72 = 80,896.96 : x
  2. Step 2: Convert to fraction form
    142,135.88/196,164.72 = 80,896.96/x
  3. Step 3: Cross multiply
    142,135.88x = 196,164.72 × 80,896.96
  4. Step 4: Simplify right side
    142,135.88x = 15,869,129,593.18
  5. Step 5: Solve for x
    x = 15,869,129,593.18/142,135.88
  6. Step 6: Final answer
    x = 111,647.60

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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.