Home / 86,814.20-130,221.30-76,446.20

Finding the Fourth Proportional to 86,814.20, 130,221.30 and 76,446.20

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Solution

The fourth proportional to 86,814.20, 130,221.30 and 76,446.20 is: 114,669.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,814.20 : 130,221.30 = 76,446.20 : x
  2. Step 2: Convert to fraction form
    86,814.20/130,221.30 = 76,446.20/x
  3. Step 3: Cross multiply
    86,814.20x = 130,221.30 × 76,446.20
  4. Step 4: Simplify right side
    86,814.20x = 9,954,923,544.06
  5. Step 5: Solve for x
    x = 9,954,923,544.06/86,814.20
  6. Step 6: Final answer
    x = 114,669.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.