Home / 143,438.14-197,941.80-79,774.57

Finding the Fourth Proportional to 143,438.14, 197,941.80 and 79,774.57

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Solution

The fourth proportional to 143,438.14, 197,941.80 and 79,774.57 is: 110,087.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,438.14 : 197,941.80 = 79,774.57 : x
  2. Step 2: Convert to fraction form
    143,438.14/197,941.80 = 79,774.57/x
  3. Step 3: Cross multiply
    143,438.14x = 197,941.80 × 79,774.57
  4. Step 4: Simplify right side
    143,438.14x = 15,790,721,980.03
  5. Step 5: Solve for x
    x = 15,790,721,980.03/143,438.14
  6. Step 6: Final answer
    x = 110,087.33

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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.