Home / 143,580.26-198,140.76-79,916.69

Finding the Fourth Proportional to 143,580.26, 198,140.76 and 79,916.69

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Solution

The fourth proportional to 143,580.26, 198,140.76 and 79,916.69 is: 110,285.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,580.26 : 198,140.76 = 79,916.69 : x
  2. Step 2: Convert to fraction form
    143,580.26/198,140.76 = 79,916.69/x
  3. Step 3: Cross multiply
    143,580.26x = 198,140.76 × 79,916.69
  4. Step 4: Simplify right side
    143,580.26x = 15,834,752,702.58
  5. Step 5: Solve for x
    x = 15,834,752,702.58/143,580.26
  6. Step 6: Final answer
    x = 110,285.03

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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.