Home / 143,414.34-197,916.54-78,886.26

Finding the Fourth Proportional to 143,414.34, 197,916.54 and 78,886.26

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Solution

The fourth proportional to 143,414.34, 197,916.54 and 78,886.26 is: 108,865.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,414.34 : 197,916.54 = 78,886.26 : x
  2. Step 2: Convert to fraction form
    143,414.34/197,916.54 = 78,886.26/x
  3. Step 3: Cross multiply
    143,414.34x = 197,916.54 × 78,886.26
  4. Step 4: Simplify right side
    143,414.34x = 15,612,895,632.74
  5. Step 5: Solve for x
    x = 15,612,895,632.74/143,414.34
  6. Step 6: Final answer
    x = 108,865.65

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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.