Home / 143,560.98-198,112.18-79,898.78

Finding the Fourth Proportional to 143,560.98, 198,112.18 and 79,898.78

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Solution

The fourth proportional to 143,560.98, 198,112.18 and 79,898.78 is: 110,259.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,560.98 : 198,112.18 = 79,898.78 : x
  2. Step 2: Convert to fraction form
    143,560.98/198,112.18 = 79,898.78/x
  3. Step 3: Cross multiply
    143,560.98x = 198,112.18 × 79,898.78
  4. Step 4: Simplify right side
    143,560.98x = 15,828,921,485.14
  5. Step 5: Solve for x
    x = 15,828,921,485.14/143,560.98
  6. Step 6: Final answer
    x = 110,259.22

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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.