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Finding the Fourth Proportional to 143,355.96, 197,807.94 and 79,692.12

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Solution

The fourth proportional to 143,355.96, 197,807.94 and 79,692.12 is: 109,962.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,355.96 : 197,807.94 = 79,692.12 : x
  2. Step 2: Convert to fraction form
    143,355.96/197,807.94 = 79,692.12/x
  3. Step 3: Cross multiply
    143,355.96x = 197,807.94 × 79,692.12
  4. Step 4: Simplify right side
    143,355.96x = 15,763,734,091.43
  5. Step 5: Solve for x
    x = 15,763,734,091.43/143,355.96
  6. Step 6: Final answer
    x = 109,962.18

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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.