Home / 105,125.46-145,073.88-57,379.20

Finding the Fourth Proportional to 105,125.46, 145,073.88 and 57,379.20

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Solution

The fourth proportional to 105,125.46, 145,073.88 and 57,379.20 is: 79,183.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,125.46 : 145,073.88 = 57,379.20 : x
  2. Step 2: Convert to fraction form
    105,125.46/145,073.88 = 57,379.20/x
  3. Step 3: Cross multiply
    105,125.46x = 145,073.88 × 57,379.20
  4. Step 4: Simplify right side
    105,125.46x = 8,324,223,175.30
  5. Step 5: Solve for x
    x = 8,324,223,175.30/105,125.46
  6. Step 6: Final answer
    x = 79,183.70

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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.