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Finding the Fourth Proportional to 185,789.70, 256,430.70 and 122,133.42

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Solution

The fourth proportional to 185,789.70, 256,430.70 and 122,133.42 is: 168,571.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,789.70 : 256,430.70 = 122,133.42 : x
  2. Step 2: Convert to fraction form
    185,789.70/256,430.70 = 122,133.42/x
  3. Step 3: Cross multiply
    185,789.70x = 256,430.70 × 122,133.42
  4. Step 4: Simplify right side
    185,789.70x = 31,318,758,383.99
  5. Step 5: Solve for x
    x = 31,318,758,383.99/185,789.70
  6. Step 6: Final answer
    x = 168,571.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.