Home / 142,163.58-196,181.99-78,500.01

Finding the Fourth Proportional to 142,163.58, 196,181.99 and 78,500.01

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Solution

The fourth proportional to 142,163.58, 196,181.99 and 78,500.01 is: 108,327.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,163.58 : 196,181.99 = 78,500.01 : x
  2. Step 2: Convert to fraction form
    142,163.58/196,181.99 = 78,500.01/x
  3. Step 3: Cross multiply
    142,163.58x = 196,181.99 × 78,500.01
  4. Step 4: Simplify right side
    142,163.58x = 15,400,288,152.22
  5. Step 5: Solve for x
    x = 15,400,288,152.22/142,163.58
  6. Step 6: Final answer
    x = 108,327.94

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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.