Home / 252,172.12-378,344.58-86,076.76

Finding the Fourth Proportional to 252,172.12, 378,344.58 and 86,076.76

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Solution

The fourth proportional to 252,172.12, 378,344.58 and 86,076.76 is: 129,144.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,172.12 : 378,344.58 = 86,076.76 : x
  2. Step 2: Convert to fraction form
    252,172.12/378,344.58 = 86,076.76/x
  3. Step 3: Cross multiply
    252,172.12x = 378,344.58 × 86,076.76
  4. Step 4: Simplify right side
    252,172.12x = 32,566,675,609.96
  5. Step 5: Solve for x
    x = 32,566,675,609.96/252,172.12
  6. Step 6: Final answer
    x = 129,144.63

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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.