Home / 142,163.64-196,185.82-78,501.56

Finding the Fourth Proportional to 142,163.64, 196,185.82 and 78,501.56

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Solution

The fourth proportional to 142,163.64, 196,185.82 and 78,501.56 is: 108,332.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,163.64 : 196,185.82 = 78,501.56 : x
  2. Step 2: Convert to fraction form
    142,163.64/196,185.82 = 78,501.56/x
  3. Step 3: Cross multiply
    142,163.64x = 196,185.82 × 78,501.56
  4. Step 4: Simplify right side
    142,163.64x = 15,400,892,919.88
  5. Step 5: Solve for x
    x = 15,400,892,919.88/142,163.64
  6. Step 6: Final answer
    x = 108,332.15

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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.