Home / 129,243.37-178,329.44-75,518.00

Finding the Fourth Proportional to 129,243.37, 178,329.44 and 75,518.00

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Solution

The fourth proportional to 129,243.37, 178,329.44 and 75,518.00 is: 104,199.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,243.37 : 178,329.44 = 75,518.00 : x
  2. Step 2: Convert to fraction form
    129,243.37/178,329.44 = 75,518.00/x
  3. Step 3: Cross multiply
    129,243.37x = 178,329.44 × 75,518.00
  4. Step 4: Simplify right side
    129,243.37x = 13,467,082,904.96
  5. Step 5: Solve for x
    x = 13,467,082,904.96/129,243.37
  6. Step 6: Final answer
    x = 104,199.41

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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.