Home / 143,928.15-198,611.44-79,393.51

Finding the Fourth Proportional to 143,928.15, 198,611.44 and 79,393.51

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Solution

The fourth proportional to 143,928.15, 198,611.44 and 79,393.51 is: 109,557.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,928.15 : 198,611.44 = 79,393.51 : x
  2. Step 2: Convert to fraction form
    143,928.15/198,611.44 = 79,393.51/x
  3. Step 3: Cross multiply
    143,928.15x = 198,611.44 × 79,393.51
  4. Step 4: Simplify right side
    143,928.15x = 15,768,459,347.75
  5. Step 5: Solve for x
    x = 15,768,459,347.75/143,928.15
  6. Step 6: Final answer
    x = 109,557.85

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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.