Home / 136,208.98-187,994.28-85,245.40

Finding the Fourth Proportional to 136,208.98, 187,994.28 and 85,245.40

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Solution

The fourth proportional to 136,208.98, 187,994.28 and 85,245.40 is: 117,654.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,208.98 : 187,994.28 = 85,245.40 : x
  2. Step 2: Convert to fraction form
    136,208.98/187,994.28 = 85,245.40/x
  3. Step 3: Cross multiply
    136,208.98x = 187,994.28 × 85,245.40
  4. Step 4: Simplify right side
    136,208.98x = 16,025,647,596.31
  5. Step 5: Solve for x
    x = 16,025,647,596.31/136,208.98
  6. Step 6: Final answer
    x = 117,654.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.