Home / 143,579.16-198,136.26-79,913.16

Finding the Fourth Proportional to 143,579.16, 198,136.26 and 79,913.16

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Solution

The fourth proportional to 143,579.16, 198,136.26 and 79,913.16 is: 110,278.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,579.16 : 198,136.26 = 79,913.16 : x
  2. Step 2: Convert to fraction form
    143,579.16/198,136.26 = 79,913.16/x
  3. Step 3: Cross multiply
    143,579.16x = 198,136.26 × 79,913.16
  4. Step 4: Simplify right side
    143,579.16x = 15,833,694,647.18
  5. Step 5: Solve for x
    x = 15,833,694,647.18/143,579.16
  6. Step 6: Final answer
    x = 110,278.50

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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.