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Finding the Fourth Proportional to 143,957.56, 198,652.42 and 79,427.56

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Solution

The fourth proportional to 143,957.56, 198,652.42 and 79,427.56 is: 109,605.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,957.56 : 198,652.42 = 79,427.56 : x
  2. Step 2: Convert to fraction form
    143,957.56/198,652.42 = 79,427.56/x
  3. Step 3: Cross multiply
    143,957.56x = 198,652.42 × 79,427.56
  4. Step 4: Simplify right side
    143,957.56x = 15,778,477,008.70
  5. Step 5: Solve for x
    x = 15,778,477,008.70/143,957.56
  6. Step 6: Final answer
    x = 109,605.06

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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.