Home / 143,579.88-198,140.25-79,916.31

Finding the Fourth Proportional to 143,579.88, 198,140.25 and 79,916.31

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Solution

The fourth proportional to 143,579.88, 198,140.25 and 79,916.31 is: 110,284.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,579.88 : 198,140.25 = 79,916.31 : x
  2. Step 2: Convert to fraction form
    143,579.88/198,140.25 = 79,916.31/x
  3. Step 3: Cross multiply
    143,579.88x = 198,140.25 × 79,916.31
  4. Step 4: Simplify right side
    143,579.88x = 15,834,637,642.48
  5. Step 5: Solve for x
    x = 15,834,637,642.48/143,579.88
  6. Step 6: Final answer
    x = 110,284.52

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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.