Home / 143,128.45-197,523.43-79,466.25

Finding the Fourth Proportional to 143,128.45, 197,523.43 and 79,466.25

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Solution

The fourth proportional to 143,128.45, 197,523.43 and 79,466.25 is: 109,666.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,128.45 : 197,523.43 = 79,466.25 : x
  2. Step 2: Convert to fraction form
    143,128.45/197,523.43 = 79,466.25/x
  3. Step 3: Cross multiply
    143,128.45x = 197,523.43 × 79,466.25
  4. Step 4: Simplify right side
    143,128.45x = 15,696,446,269.24
  5. Step 5: Solve for x
    x = 15,696,446,269.24/143,128.45
  6. Step 6: Final answer
    x = 109,666.85

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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.