Home / 172,274.02-258,147.86-72,379.60

Finding the Fourth Proportional to 172,274.02, 258,147.86 and 72,379.60

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Solution

The fourth proportional to 172,274.02, 258,147.86 and 72,379.60 is: 108,458.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,274.02 : 258,147.86 = 72,379.60 : x
  2. Step 2: Convert to fraction form
    172,274.02/258,147.86 = 72,379.60/x
  3. Step 3: Cross multiply
    172,274.02x = 258,147.86 × 72,379.60
  4. Step 4: Simplify right side
    172,274.02x = 18,684,638,847.66
  5. Step 5: Solve for x
    x = 18,684,638,847.66/172,274.02
  6. Step 6: Final answer
    x = 108,458.83

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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.