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Finding the Fourth Proportional to 122,993.92, 169,673.61 and 71,975.08

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Solution

The fourth proportional to 122,993.92, 169,673.61 and 71,975.08 is: 99,291.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,993.92 : 169,673.61 = 71,975.08 : x
  2. Step 2: Convert to fraction form
    122,993.92/169,673.61 = 71,975.08/x
  3. Step 3: Cross multiply
    122,993.92x = 169,673.61 × 71,975.08
  4. Step 4: Simplify right side
    122,993.92x = 12,212,271,653.64
  5. Step 5: Solve for x
    x = 12,212,271,653.64/122,993.92
  6. Step 6: Final answer
    x = 99,291.67

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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.