Home / 172,278.12-258,483.06-67,170.36

Finding the Fourth Proportional to 172,278.12, 258,483.06 and 67,170.36

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Solution

The fourth proportional to 172,278.12, 258,483.06 and 67,170.36 is: 100,781.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,278.12 : 258,483.06 = 67,170.36 : x
  2. Step 2: Convert to fraction form
    172,278.12/258,483.06 = 67,170.36/x
  3. Step 3: Cross multiply
    172,278.12x = 258,483.06 × 67,170.36
  4. Step 4: Simplify right side
    172,278.12x = 17,362,400,194.10
  5. Step 5: Solve for x
    x = 17,362,400,194.10/172,278.12
  6. Step 6: Final answer
    x = 100,781.23

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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.