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Finding the Fourth Proportional to 172,007.20, 258,010.80 and 100,856.80

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Solution

The fourth proportional to 172,007.20, 258,010.80 and 100,856.80 is: 151,285.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,007.20 : 258,010.80 = 100,856.80 : x
  2. Step 2: Convert to fraction form
    172,007.20/258,010.80 = 100,856.80/x
  3. Step 3: Cross multiply
    172,007.20x = 258,010.80 × 100,856.80
  4. Step 4: Simplify right side
    172,007.20x = 26,022,143,653.44
  5. Step 5: Solve for x
    x = 26,022,143,653.44/172,007.20
  6. Step 6: Final answer
    x = 151,285.20

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1.5x scale

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.