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Finding the Fourth Proportional to 118,896.76, 178,330.56 and 69,004

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Solution

The fourth proportional to 118,896.76, 178,330.56 and 69,004 is: 103,497.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,896.76 : 178,330.56 = 69,004 : x
  2. Step 2: Convert to fraction form
    118,896.76/178,330.56 = 69,004/x
  3. Step 3: Cross multiply
    118,896.76x = 178,330.56 × 69,004
  4. Step 4: Simplify right side
    118,896.76x = 12,305,521,962.24
  5. Step 5: Solve for x
    x = 12,305,521,962.24/118,896.76
  6. Step 6: Final answer
    x = 103,497.54

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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.