Home / 172,445.31-258,678.88-54,121.32

Finding the Fourth Proportional to 172,445.31, 258,678.88 and 54,121.32

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Solution

The fourth proportional to 172,445.31, 258,678.88 and 54,121.32 is: 81,185.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,445.31 : 258,678.88 = 54,121.32 : x
  2. Step 2: Convert to fraction form
    172,445.31/258,678.88 = 54,121.32/x
  3. Step 3: Cross multiply
    172,445.31x = 258,678.88 × 54,121.32
  4. Step 4: Simplify right side
    172,445.31x = 14,000,042,441.72
  5. Step 5: Solve for x
    x = 14,000,042,441.72/172,445.31
  6. Step 6: Final answer
    x = 81,185.41

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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.