Home / 143,968.12-198,674.72-79,437.96

Finding the Fourth Proportional to 143,968.12, 198,674.72 and 79,437.96

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Solution

The fourth proportional to 143,968.12, 198,674.72 and 79,437.96 is: 109,623.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,968.12 : 198,674.72 = 79,437.96 : x
  2. Step 2: Convert to fraction form
    143,968.12/198,674.72 = 79,437.96/x
  3. Step 3: Cross multiply
    143,968.12x = 198,674.72 × 79,437.96
  4. Step 4: Simplify right side
    143,968.12x = 15,782,314,460.37
  5. Step 5: Solve for x
    x = 15,782,314,460.37/143,968.12
  6. Step 6: Final answer
    x = 109,623.68

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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.