Home / 172,128.69-258,195.48-45,771.12

Finding the Fourth Proportional to 172,128.69, 258,195.48 and 45,771.12

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Solution

The fourth proportional to 172,128.69, 258,195.48 and 45,771.12 is: 68,657.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,128.69 : 258,195.48 = 45,771.12 : x
  2. Step 2: Convert to fraction form
    172,128.69/258,195.48 = 45,771.12/x
  3. Step 3: Cross multiply
    172,128.69x = 258,195.48 × 45,771.12
  4. Step 4: Simplify right side
    172,128.69x = 11,817,896,298.54
  5. Step 5: Solve for x
    x = 11,817,896,298.54/172,128.69
  6. Step 6: Final answer
    x = 68,657.33

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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.