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Finding the Fourth Proportional to 173,638.40, 259,939.20 and 103,481.60

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Solution

The fourth proportional to 173,638.40, 259,939.20 and 103,481.60 is: 154,913.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,638.40 : 259,939.20 = 103,481.60 : x
  2. Step 2: Convert to fraction form
    173,638.40/259,939.20 = 103,481.60/x
  3. Step 3: Cross multiply
    173,638.40x = 259,939.20 × 103,481.60
  4. Step 4: Simplify right side
    173,638.40x = 26,898,924,318.72
  5. Step 5: Solve for x
    x = 26,898,924,318.72/173,638.40
  6. Step 6: Final answer
    x = 154,913.45

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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.