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Finding the Fourth Proportional to 173,638.80, 260,544.60 and 68,461.20

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Solution

The fourth proportional to 173,638.80, 260,544.60 and 68,461.20 is: 102,725.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,638.80 : 260,544.60 = 68,461.20 : x
  2. Step 2: Convert to fraction form
    173,638.80/260,544.60 = 68,461.20/x
  3. Step 3: Cross multiply
    173,638.80x = 260,544.60 × 68,461.20
  4. Step 4: Simplify right side
    173,638.80x = 17,837,195,969.52
  5. Step 5: Solve for x
    x = 17,837,195,969.52/173,638.80
  6. Step 6: Final answer
    x = 102,725.87

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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.