Home / 172,275.02-258,149.36-72,380.60

Finding the Fourth Proportional to 172,275.02, 258,149.36 and 72,380.60

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Solution

The fourth proportional to 172,275.02, 258,149.36 and 72,380.60 is: 108,460.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,275.02 : 258,149.36 = 72,380.60 : x
  2. Step 2: Convert to fraction form
    172,275.02/258,149.36 = 72,380.60/x
  3. Step 3: Cross multiply
    172,275.02x = 258,149.36 × 72,380.60
  4. Step 4: Simplify right side
    172,275.02x = 18,685,005,566.42
  5. Step 5: Solve for x
    x = 18,685,005,566.42/172,275.02
  6. Step 6: Final answer
    x = 108,460.33

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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.