Home / 86,739.84-129,481.92-76,242.24

Finding the Fourth Proportional to 86,739.84, 129,481.92 and 76,242.24

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Solution

The fourth proportional to 86,739.84, 129,481.92 and 76,242.24 is: 113,811.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,739.84 : 129,481.92 = 76,242.24 : x
  2. Step 2: Convert to fraction form
    86,739.84/129,481.92 = 76,242.24/x
  3. Step 3: Cross multiply
    86,739.84x = 129,481.92 × 76,242.24
  4. Step 4: Simplify right side
    86,739.84x = 9,871,991,620.30
  5. Step 5: Solve for x
    x = 9,871,991,620.30/86,739.84
  6. Step 6: Final answer
    x = 113,811.50

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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.