Home / 212,056.74-317,668.95-123,123.78

Finding the Fourth Proportional to 212,056.74, 317,668.95 and 123,123.78

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Solution

The fourth proportional to 212,056.74, 317,668.95 and 123,123.78 is: 184,444.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,056.74 : 317,668.95 = 123,123.78 : x
  2. Step 2: Convert to fraction form
    212,056.74/317,668.95 = 123,123.78/x
  3. Step 3: Cross multiply
    212,056.74x = 317,668.95 × 123,123.78
  4. Step 4: Simplify right side
    212,056.74x = 39,112,601,912.63
  5. Step 5: Solve for x
    x = 39,112,601,912.63/212,056.74
  6. Step 6: Final answer
    x = 184,444.04

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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.