Home / 105,126.60-145,069.38-57,379.56

Finding the Fourth Proportional to 105,126.60, 145,069.38 and 57,379.56

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Solution

The fourth proportional to 105,126.60, 145,069.38 and 57,379.56 is: 79,180.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,126.60 : 145,069.38 = 57,379.56 : x
  2. Step 2: Convert to fraction form
    105,126.60/145,069.38 = 57,379.56/x
  3. Step 3: Cross multiply
    105,126.60x = 145,069.38 × 57,379.56
  4. Step 4: Simplify right side
    105,126.60x = 8,324,017,193.87
  5. Step 5: Solve for x
    x = 8,324,017,193.87/105,126.60
  6. Step 6: Final answer
    x = 79,180.88

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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.