Home / 105,554.82-145,662.39-57,806.94

Finding the Fourth Proportional to 105,554.82, 145,662.39 and 57,806.94

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Solution

The fourth proportional to 105,554.82, 145,662.39 and 57,806.94 is: 79,771.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,554.82 : 145,662.39 = 57,806.94 : x
  2. Step 2: Convert to fraction form
    105,554.82/145,662.39 = 57,806.94/x
  3. Step 3: Cross multiply
    105,554.82x = 145,662.39 × 57,806.94
  4. Step 4: Simplify right side
    105,554.82x = 8,420,297,038.99
  5. Step 5: Solve for x
    x = 8,420,297,038.99/105,554.82
  6. Step 6: Final answer
    x = 79,771.79

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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.