Home / 105,530.60-145,632.24-57,786.88

Finding the Fourth Proportional to 105,530.60, 145,632.24 and 57,786.88

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Solution

The fourth proportional to 105,530.60, 145,632.24 and 57,786.88 is: 79,745.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,530.60 : 145,632.24 = 57,786.88 : x
  2. Step 2: Convert to fraction form
    105,530.60/145,632.24 = 57,786.88/x
  3. Step 3: Cross multiply
    105,530.60x = 145,632.24 × 57,786.88
  4. Step 4: Simplify right side
    105,530.60x = 8,415,632,777.01
  5. Step 5: Solve for x
    x = 8,415,632,777.01/105,530.60
  6. Step 6: Final answer
    x = 79,745.90

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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.