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Finding the Fourth Proportional to 167,999.70, 251,999.55 and 138,450.90

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Solution

The fourth proportional to 167,999.70, 251,999.55 and 138,450.90 is: 207,676.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,999.70 : 251,999.55 = 138,450.90 : x
  2. Step 2: Convert to fraction form
    167,999.70/251,999.55 = 138,450.90/x
  3. Step 3: Cross multiply
    167,999.70x = 251,999.55 × 138,450.90
  4. Step 4: Simplify right side
    167,999.70x = 34,889,564,497.10
  5. Step 5: Solve for x
    x = 34,889,564,497.10/167,999.70
  6. Step 6: Final answer
    x = 207,676.35

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1.5x scale

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.