Home / 143,142.22-197,542.29-79,485.94

Finding the Fourth Proportional to 143,142.22, 197,542.29 and 79,485.94

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Solution

The fourth proportional to 143,142.22, 197,542.29 and 79,485.94 is: 109,693.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,142.22 : 197,542.29 = 79,485.94 : x
  2. Step 2: Convert to fraction form
    143,142.22/197,542.29 = 79,485.94/x
  3. Step 3: Cross multiply
    143,142.22x = 197,542.29 × 79,485.94
  4. Step 4: Simplify right side
    143,142.22x = 15,701,834,610.40
  5. Step 5: Solve for x
    x = 15,701,834,610.40/143,142.22
  6. Step 6: Final answer
    x = 109,693.94

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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.