Home / 143,069.16-197,435.43-79,406.94

Finding the Fourth Proportional to 143,069.16, 197,435.43 and 79,406.94

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Solution

The fourth proportional to 143,069.16, 197,435.43 and 79,406.94 is: 109,581.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,069.16 : 197,435.43 = 79,406.94 : x
  2. Step 2: Convert to fraction form
    143,069.16/197,435.43 = 79,406.94/x
  3. Step 3: Cross multiply
    143,069.16x = 197,435.43 × 79,406.94
  4. Step 4: Simplify right side
    143,069.16x = 15,677,743,343.88
  5. Step 5: Solve for x
    x = 15,677,743,343.88/143,069.16
  6. Step 6: Final answer
    x = 109,581.57

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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.