Home / 143,021.61-197,369.19-79,359.26

Finding the Fourth Proportional to 143,021.61, 197,369.19 and 79,359.26

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Solution

The fourth proportional to 143,021.61, 197,369.19 and 79,359.26 is: 109,515.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,021.61 : 197,369.19 = 79,359.26 : x
  2. Step 2: Convert to fraction form
    143,021.61/197,369.19 = 79,359.26/x
  3. Step 3: Cross multiply
    143,021.61x = 197,369.19 × 79,359.26
  4. Step 4: Simplify right side
    143,021.61x = 15,663,071,878.35
  5. Step 5: Solve for x
    x = 15,663,071,878.35/143,021.61
  6. Step 6: Final answer
    x = 109,515.42

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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.