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Finding the Fourth Proportional to 136,847.88, 188,846.40 and 76,416.84

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Solution

The fourth proportional to 136,847.88, 188,846.40 and 76,416.84 is: 105,453.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,847.88 : 188,846.40 = 76,416.84 : x
  2. Step 2: Convert to fraction form
    136,847.88/188,846.40 = 76,416.84/x
  3. Step 3: Cross multiply
    136,847.88x = 188,846.40 × 76,416.84
  4. Step 4: Simplify right side
    136,847.88x = 14,431,045,133.38
  5. Step 5: Solve for x
    x = 14,431,045,133.38/136,847.88
  6. Step 6: Final answer
    x = 105,453.19

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1.5x scale

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.