Home / 114,678.36-172,086.78-81,672.87

Finding the Fourth Proportional to 114,678.36, 172,086.78 and 81,672.87

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Solution

The fourth proportional to 114,678.36, 172,086.78 and 81,672.87 is: 122,558.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,678.36 : 172,086.78 = 81,672.87 : x
  2. Step 2: Convert to fraction form
    114,678.36/172,086.78 = 81,672.87/x
  3. Step 3: Cross multiply
    114,678.36x = 172,086.78 × 81,672.87
  4. Step 4: Simplify right side
    114,678.36x = 14,054,821,211.66
  5. Step 5: Solve for x
    x = 14,054,821,211.66/114,678.36
  6. Step 6: Final answer
    x = 122,558.62

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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.