Home / 145,936.80-218,879.28-40,729.68

Finding the Fourth Proportional to 145,936.80, 218,879.28 and 40,729.68

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Solution

The fourth proportional to 145,936.80, 218,879.28 and 40,729.68 is: 61,087.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,936.80 : 218,879.28 = 40,729.68 : x
  2. Step 2: Convert to fraction form
    145,936.80/218,879.28 = 40,729.68/x
  3. Step 3: Cross multiply
    145,936.80x = 218,879.28 × 40,729.68
  4. Step 4: Simplify right side
    145,936.80x = 8,914,883,033.03
  5. Step 5: Solve for x
    x = 8,914,883,033.03/145,936.80
  6. Step 6: Final answer
    x = 61,087.29

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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.