Home / 143,192.75-197,606-79,536.47

Finding the Fourth Proportional to 143,192.75, 197,606 and 79,536.47

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Solution

The fourth proportional to 143,192.75, 197,606 and 79,536.47 is: 109,760.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,192.75 : 197,606 = 79,536.47 : x
  2. Step 2: Convert to fraction form
    143,192.75/197,606 = 79,536.47/x
  3. Step 3: Cross multiply
    143,192.75x = 197,606 × 79,536.47
  4. Step 4: Simplify right side
    143,192.75x = 15,716,883,690.82
  5. Step 5: Solve for x
    x = 15,716,883,690.82/143,192.75
  6. Step 6: Final answer
    x = 109,760.33

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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.