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Finding the Fourth Proportional to 172,074.36, 258,111.12 and 45,727.32

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Solution

The fourth proportional to 172,074.36, 258,111.12 and 45,727.32 is: 68,590.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,074.36 : 258,111.12 = 45,727.32 : x
  2. Step 2: Convert to fraction form
    172,074.36/258,111.12 = 45,727.32/x
  3. Step 3: Cross multiply
    172,074.36x = 258,111.12 × 45,727.32
  4. Step 4: Simplify right side
    172,074.36x = 11,802,729,779.80
  5. Step 5: Solve for x
    x = 11,802,729,779.80/172,074.36
  6. Step 6: Final answer
    x = 68,590.87

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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.