Home / 172,515.15-258,783.06-54,186.49

Finding the Fourth Proportional to 172,515.15, 258,783.06 and 54,186.49

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Solution

The fourth proportional to 172,515.15, 258,783.06 and 54,186.49 is: 81,282.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,515.15 : 258,783.06 = 54,186.49 : x
  2. Step 2: Convert to fraction form
    172,515.15/258,783.06 = 54,186.49/x
  3. Step 3: Cross multiply
    172,515.15x = 258,783.06 × 54,186.49
  4. Step 4: Simplify right side
    172,515.15x = 14,022,544,459.08
  5. Step 5: Solve for x
    x = 14,022,544,459.08/172,515.15
  6. Step 6: Final answer
    x = 81,282.97

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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.