Home / 121,895.35-168,257.96-83,781.34

Finding the Fourth Proportional to 121,895.35, 168,257.96 and 83,781.34

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Solution

The fourth proportional to 121,895.35, 168,257.96 and 83,781.34 is: 115,647.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,895.35 : 168,257.96 = 83,781.34 : x
  2. Step 2: Convert to fraction form
    121,895.35/168,257.96 = 83,781.34/x
  3. Step 3: Cross multiply
    121,895.35x = 168,257.96 × 83,781.34
  4. Step 4: Simplify right side
    121,895.35x = 14,096,876,829.09
  5. Step 5: Solve for x
    x = 14,096,876,829.09/121,895.35
  6. Step 6: Final answer
    x = 115,647.37

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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.