Home / 212,022.37-317,984.95-126,657.28

Finding the Fourth Proportional to 212,022.37, 317,984.95 and 126,657.28

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Solution

The fourth proportional to 212,022.37, 317,984.95 and 126,657.28 is: 189,956.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,022.37 : 317,984.95 = 126,657.28 : x
  2. Step 2: Convert to fraction form
    212,022.37/317,984.95 = 126,657.28/x
  3. Step 3: Cross multiply
    212,022.37x = 317,984.95 × 126,657.28
  4. Step 4: Simplify right side
    212,022.37x = 40,275,108,847.94
  5. Step 5: Solve for x
    x = 40,275,108,847.94/212,022.37
  6. Step 6: Final answer
    x = 189,956.88

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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.