Home / 105,771.23-145,963.57-57,372.96

Finding the Fourth Proportional to 105,771.23, 145,963.57 and 57,372.96

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Solution

The fourth proportional to 105,771.23, 145,963.57 and 57,372.96 is: 79,174.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,771.23 : 145,963.57 = 57,372.96 : x
  2. Step 2: Convert to fraction form
    105,771.23/145,963.57 = 57,372.96/x
  3. Step 3: Cross multiply
    105,771.23x = 145,963.57 × 57,372.96
  4. Step 4: Simplify right side
    105,771.23x = 8,374,362,063.07
  5. Step 5: Solve for x
    x = 8,374,362,063.07/105,771.23
  6. Step 6: Final answer
    x = 79,174.29

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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.