Home / 171,971.10-258,055.06-66,776.40

Finding the Fourth Proportional to 171,971.10, 258,055.06 and 66,776.40

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Solution

The fourth proportional to 171,971.10, 258,055.06 and 66,776.40 is: 100,202.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,971.10 : 258,055.06 = 66,776.40 : x
  2. Step 2: Convert to fraction form
    171,971.10/258,055.06 = 66,776.40/x
  3. Step 3: Cross multiply
    171,971.10x = 258,055.06 × 66,776.40
  4. Step 4: Simplify right side
    171,971.10x = 17,231,987,908.58
  5. Step 5: Solve for x
    x = 17,231,987,908.58/171,971.10
  6. Step 6: Final answer
    x = 100,202.81

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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.