Home / 115,125.26-172,786.30-45,053.78

Finding the Fourth Proportional to 115,125.26, 172,786.30 and 45,053.78

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Solution

The fourth proportional to 115,125.26, 172,786.30 and 45,053.78 is: 67,619.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,125.26 : 172,786.30 = 45,053.78 : x
  2. Step 2: Convert to fraction form
    115,125.26/172,786.30 = 45,053.78/x
  3. Step 3: Cross multiply
    115,125.26x = 172,786.30 × 45,053.78
  4. Step 4: Simplify right side
    115,125.26x = 7,784,675,947.21
  5. Step 5: Solve for x
    x = 7,784,675,947.21/115,125.26
  6. Step 6: Final answer
    x = 67,619.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.