Home / 211,819.50-317,860.56-123,114.78

Finding the Fourth Proportional to 211,819.50, 317,860.56 and 123,114.78

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Solution

The fourth proportional to 211,819.50, 317,860.56 and 123,114.78 is: 184,748.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,819.50 : 317,860.56 = 123,114.78 : x
  2. Step 2: Convert to fraction form
    211,819.50/317,860.56 = 123,114.78/x
  3. Step 3: Cross multiply
    211,819.50x = 317,860.56 × 123,114.78
  4. Step 4: Simplify right side
    211,819.50x = 39,133,332,915.08
  5. Step 5: Solve for x
    x = 39,133,332,915.08/211,819.50
  6. Step 6: Final answer
    x = 184,748.49

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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.