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Finding the Fourth Proportional to 164,912.10, 246,630.03 and 138,340.05

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Solution

The fourth proportional to 164,912.10, 246,630.03 and 138,340.05 is: 206,890.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,912.10 : 246,630.03 = 138,340.05 : x
  2. Step 2: Convert to fraction form
    164,912.10/246,630.03 = 138,340.05/x
  3. Step 3: Cross multiply
    164,912.10x = 246,630.03 × 138,340.05
  4. Step 4: Simplify right side
    164,912.10x = 34,118,810,681.70
  5. Step 5: Solve for x
    x = 34,118,810,681.70/164,912.10
  6. Step 6: Final answer
    x = 206,890.89

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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.