Home / 86,958.23-129,658.41-85,383.59

Finding the Fourth Proportional to 86,958.23, 129,658.41 and 85,383.59

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Solution

The fourth proportional to 86,958.23, 129,658.41 and 85,383.59 is: 127,310.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,958.23 : 129,658.41 = 85,383.59 : x
  2. Step 2: Convert to fraction form
    86,958.23/129,658.41 = 85,383.59/x
  3. Step 3: Cross multiply
    86,958.23x = 129,658.41 × 85,383.59
  4. Step 4: Simplify right side
    86,958.23x = 11,070,699,871.20
  5. Step 5: Solve for x
    x = 11,070,699,871.20/86,958.23
  6. Step 6: Final answer
    x = 127,310.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.