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Finding the Fourth Proportional to 172,095.49, 258,169.43 and 87,809.59

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Solution

The fourth proportional to 172,095.49, 258,169.43 and 87,809.59 is: 131,727.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,095.49 : 258,169.43 = 87,809.59 : x
  2. Step 2: Convert to fraction form
    172,095.49/258,169.43 = 87,809.59/x
  3. Step 3: Cross multiply
    172,095.49x = 258,169.43 × 87,809.59
  4. Step 4: Simplify right side
    172,095.49x = 22,669,751,798.83
  5. Step 5: Solve for x
    x = 22,669,751,798.83/172,095.49
  6. Step 6: Final answer
    x = 131,727.75

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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.