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Finding the Fourth Proportional to 173,530.62, 260,311.73 and 66,880.35

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Solution

The fourth proportional to 173,530.62, 260,311.73 and 66,880.35 is: 100,326.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,530.62 : 260,311.73 = 66,880.35 : x
  2. Step 2: Convert to fraction form
    173,530.62/260,311.73 = 66,880.35/x
  3. Step 3: Cross multiply
    173,530.62x = 260,311.73 × 66,880.35
  4. Step 4: Simplify right side
    173,530.62x = 17,409,739,277.10
  5. Step 5: Solve for x
    x = 17,409,739,277.10/173,530.62
  6. Step 6: Final answer
    x = 100,326.61

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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.