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Finding the Fourth Proportional to 203,729.04, 305,609.90 and 77,429.80

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Solution

The fourth proportional to 203,729.04, 305,609.90 and 77,429.80 is: 116,150.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,729.04 : 305,609.90 = 77,429.80 : x
  2. Step 2: Convert to fraction form
    203,729.04/305,609.90 = 77,429.80/x
  3. Step 3: Cross multiply
    203,729.04x = 305,609.90 × 77,429.80
  4. Step 4: Simplify right side
    203,729.04x = 23,663,313,435.02
  5. Step 5: Solve for x
    x = 23,663,313,435.02/203,729.04
  6. Step 6: Final answer
    x = 116,150.91

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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.