Home / 143,405.57-197,899.85-79,742.00

Finding the Fourth Proportional to 143,405.57, 197,899.85 and 79,742.00

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Solution

The fourth proportional to 143,405.57, 197,899.85 and 79,742.00 is: 110,044.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,405.57 : 197,899.85 = 79,742.00 : x
  2. Step 2: Convert to fraction form
    143,405.57/197,899.85 = 79,742.00/x
  3. Step 3: Cross multiply
    143,405.57x = 197,899.85 × 79,742.00
  4. Step 4: Simplify right side
    143,405.57x = 15,780,928,450.49
  5. Step 5: Solve for x
    x = 15,780,928,450.49/143,405.57
  6. Step 6: Final answer
    x = 110,044.05

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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.