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Finding the Fourth Proportional to 115,183.58, 172,798.86 and 65,285.96

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Solution

The fourth proportional to 115,183.58, 172,798.86 and 65,285.96 is: 97,942.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,183.58 : 172,798.86 = 65,285.96 : x
  2. Step 2: Convert to fraction form
    115,183.58/172,798.86 = 65,285.96/x
  3. Step 3: Cross multiply
    115,183.58x = 172,798.86 × 65,285.96
  4. Step 4: Simplify right side
    115,183.58x = 11,281,338,866.79
  5. Step 5: Solve for x
    x = 11,281,338,866.79/115,183.58
  6. Step 6: Final answer
    x = 97,942.25

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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.