Home / 142,911.33-197,229.74-79,269.63

Finding the Fourth Proportional to 142,911.33, 197,229.74 and 79,269.63

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Solution

The fourth proportional to 142,911.33, 197,229.74 and 79,269.63 is: 109,398.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,911.33 : 197,229.74 = 79,269.63 : x
  2. Step 2: Convert to fraction form
    142,911.33/197,229.74 = 79,269.63/x
  3. Step 3: Cross multiply
    142,911.33x = 197,229.74 × 79,269.63
  4. Step 4: Simplify right side
    142,911.33x = 15,634,328,514.80
  5. Step 5: Solve for x
    x = 15,634,328,514.80/142,911.33
  6. Step 6: Final answer
    x = 109,398.80

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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.