Home / 142,163.56-196,180.26-78,499.84

Finding the Fourth Proportional to 142,163.56, 196,180.26 and 78,499.84

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Solution

The fourth proportional to 142,163.56, 196,180.26 and 78,499.84 is: 108,326.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,163.56 : 196,180.26 = 78,499.84 : x
  2. Step 2: Convert to fraction form
    142,163.56/196,180.26 = 78,499.84/x
  3. Step 3: Cross multiply
    142,163.56x = 196,180.26 × 78,499.84
  4. Step 4: Simplify right side
    142,163.56x = 15,400,119,021.16
  5. Step 5: Solve for x
    x = 15,400,119,021.16/142,163.56
  6. Step 6: Final answer
    x = 108,326.77

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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.