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Finding the Fourth Proportional to 176,108.49, 263,923.70 and 81,129.69

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Solution

The fourth proportional to 176,108.49, 263,923.70 and 81,129.69 is: 121,584.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,108.49 : 263,923.70 = 81,129.69 : x
  2. Step 2: Convert to fraction form
    176,108.49/263,923.70 = 81,129.69/x
  3. Step 3: Cross multiply
    176,108.49x = 263,923.70 × 81,129.69
  4. Step 4: Simplify right side
    176,108.49x = 21,412,047,559.00
  5. Step 5: Solve for x
    x = 21,412,047,559.00/176,108.49
  6. Step 6: Final answer
    x = 121,584.41

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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.