Home / 105,183.40-145,159-57,441.20

Finding the Fourth Proportional to 105,183.40, 145,159 and 57,441.20

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Solution

The fourth proportional to 105,183.40, 145,159 and 57,441.20 is: 79,272.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,183.40 : 145,159 = 57,441.20 : x
  2. Step 2: Convert to fraction form
    105,183.40/145,159 = 57,441.20/x
  3. Step 3: Cross multiply
    105,183.40x = 145,159 × 57,441.20
  4. Step 4: Simplify right side
    105,183.40x = 8,338,107,150.80
  5. Step 5: Solve for x
    x = 8,338,107,150.80/105,183.40
  6. Step 6: Final answer
    x = 79,272.08

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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.