Home / 143,218.76-197,636.36-79,560.59

Finding the Fourth Proportional to 143,218.76, 197,636.36 and 79,560.59

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Solution

The fourth proportional to 143,218.76, 197,636.36 and 79,560.59 is: 109,790.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,218.76 : 197,636.36 = 79,560.59 : x
  2. Step 2: Convert to fraction form
    143,218.76/197,636.36 = 79,560.59/x
  3. Step 3: Cross multiply
    143,218.76x = 197,636.36 × 79,560.59
  4. Step 4: Simplify right side
    143,218.76x = 15,724,064,021.07
  5. Step 5: Solve for x
    x = 15,724,064,021.07/143,218.76
  6. Step 6: Final answer
    x = 109,790.54

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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.