Home / 135,383.74-186,878.62-78,795.12

Finding the Fourth Proportional to 135,383.74, 186,878.62 and 78,795.12

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Solution

The fourth proportional to 135,383.74, 186,878.62 and 78,795.12 is: 108,765.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,383.74 : 186,878.62 = 78,795.12 : x
  2. Step 2: Convert to fraction form
    135,383.74/186,878.62 = 78,795.12/x
  3. Step 3: Cross multiply
    135,383.74x = 186,878.62 × 78,795.12
  4. Step 4: Simplify right side
    135,383.74x = 14,725,123,288.33
  5. Step 5: Solve for x
    x = 14,725,123,288.33/135,383.74
  6. Step 6: Final answer
    x = 108,765.82

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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.