Home / 143,217.64-197,644.08-79,561.36

Finding the Fourth Proportional to 143,217.64, 197,644.08 and 79,561.36

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Solution

The fourth proportional to 143,217.64, 197,644.08 and 79,561.36 is: 109,796.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,217.64 : 197,644.08 = 79,561.36 : x
  2. Step 2: Convert to fraction form
    143,217.64/197,644.08 = 79,561.36/x
  3. Step 3: Cross multiply
    143,217.64x = 197,644.08 × 79,561.36
  4. Step 4: Simplify right side
    143,217.64x = 15,724,831,800.75
  5. Step 5: Solve for x
    x = 15,724,831,800.75/143,217.64
  6. Step 6: Final answer
    x = 109,796.75

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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.