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Finding the Fourth Proportional to 143,056.48, 197,415.48 and 79,396.96

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Solution

The fourth proportional to 143,056.48, 197,415.48 and 79,396.96 is: 109,566.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,056.48 : 197,415.48 = 79,396.96 : x
  2. Step 2: Convert to fraction form
    143,056.48/197,415.48 = 79,396.96/x
  3. Step 3: Cross multiply
    143,056.48x = 197,415.48 × 79,396.96
  4. Step 4: Simplify right side
    143,056.48x = 15,674,188,968.94
  5. Step 5: Solve for x
    x = 15,674,188,968.94/143,056.48
  6. Step 6: Final answer
    x = 109,566.44

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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.