Home / 143,405.03-197,899.11-79,741.46

Finding the Fourth Proportional to 143,405.03, 197,899.11 and 79,741.46

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Solution

The fourth proportional to 143,405.03, 197,899.11 and 79,741.46 is: 110,043.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,405.03 : 197,899.11 = 79,741.46 : x
  2. Step 2: Convert to fraction form
    143,405.03/197,899.11 = 79,741.46/x
  3. Step 3: Cross multiply
    143,405.03x = 197,899.11 × 79,741.46
  4. Step 4: Simplify right side
    143,405.03x = 15,780,763,964.10
  5. Step 5: Solve for x
    x = 15,780,763,964.10/143,405.03
  6. Step 6: Final answer
    x = 110,043.31

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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.