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Finding the Fourth Proportional to 118,027.12, 162,768 and 87,886.48

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Solution

The fourth proportional to 118,027.12, 162,768 and 87,886.48 is: 121,201.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,027.12 : 162,768 = 87,886.48 : x
  2. Step 2: Convert to fraction form
    118,027.12/162,768 = 87,886.48/x
  3. Step 3: Cross multiply
    118,027.12x = 162,768 × 87,886.48
  4. Step 4: Simplify right side
    118,027.12x = 14,305,106,576.64
  5. Step 5: Solve for x
    x = 14,305,106,576.64/118,027.12
  6. Step 6: Final answer
    x = 121,201.86

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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.