Home / 143,390.10-197,877.69-79,724.10

Finding the Fourth Proportional to 143,390.10, 197,877.69 and 79,724.10

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Solution

The fourth proportional to 143,390.10, 197,877.69 and 79,724.10 is: 110,018.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,390.10 : 197,877.69 = 79,724.10 : x
  2. Step 2: Convert to fraction form
    143,390.10/197,877.69 = 79,724.10/x
  3. Step 3: Cross multiply
    143,390.10x = 197,877.69 × 79,724.10
  4. Step 4: Simplify right side
    143,390.10x = 15,775,620,745.33
  5. Step 5: Solve for x
    x = 15,775,620,745.33/143,390.10
  6. Step 6: Final answer
    x = 110,018.90

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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.