Home / 143,389.30-197,878.54-79,725.46

Finding the Fourth Proportional to 143,389.30, 197,878.54 and 79,725.46

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Solution

The fourth proportional to 143,389.30, 197,878.54 and 79,725.46 is: 110,021.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,389.30 : 197,878.54 = 79,725.46 : x
  2. Step 2: Convert to fraction form
    143,389.30/197,878.54 = 79,725.46/x
  3. Step 3: Cross multiply
    143,389.30x = 197,878.54 × 79,725.46
  4. Step 4: Simplify right side
    143,389.30x = 15,775,957,625.63
  5. Step 5: Solve for x
    x = 15,775,957,625.63/143,389.30
  6. Step 6: Final answer
    x = 110,021.86

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1.5x scale

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.