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Finding the Fourth Proportional to 168,688.73, 253,074.61 and 118,866.14

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Solution

The fourth proportional to 168,688.73, 253,074.61 and 118,866.14 is: 178,328.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,688.73 : 253,074.61 = 118,866.14 : x
  2. Step 2: Convert to fraction form
    168,688.73/253,074.61 = 118,866.14/x
  3. Step 3: Cross multiply
    168,688.73x = 253,074.61 × 118,866.14
  4. Step 4: Simplify right side
    168,688.73x = 30,082,000,163.00
  5. Step 5: Solve for x
    x = 30,082,000,163.00/168,688.73
  6. Step 6: Final answer
    x = 178,328.45

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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.