Home / 143,022.61-197,370.57-79,360.26

Finding the Fourth Proportional to 143,022.61, 197,370.57 and 79,360.26

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Solution

The fourth proportional to 143,022.61, 197,370.57 and 79,360.26 is: 109,516.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,022.61 : 197,370.57 = 79,360.26 : x
  2. Step 2: Convert to fraction form
    143,022.61/197,370.57 = 79,360.26/x
  3. Step 3: Cross multiply
    143,022.61x = 197,370.57 × 79,360.26
  4. Step 4: Simplify right side
    143,022.61x = 15,663,379,751.55
  5. Step 5: Solve for x
    x = 15,663,379,751.55/143,022.61
  6. Step 6: Final answer
    x = 109,516.81

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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.