Home / 172,074.18-258,275.45-105,644.06

Finding the Fourth Proportional to 172,074.18, 258,275.45 and 105,644.06

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Solution

The fourth proportional to 172,074.18, 258,275.45 and 105,644.06 is: 158,566.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,074.18 : 258,275.45 = 105,644.06 : x
  2. Step 2: Convert to fraction form
    172,074.18/258,275.45 = 105,644.06/x
  3. Step 3: Cross multiply
    172,074.18x = 258,275.45 × 105,644.06
  4. Step 4: Simplify right side
    172,074.18x = 27,285,266,490.64
  5. Step 5: Solve for x
    x = 27,285,266,490.64/172,074.18
  6. Step 6: Final answer
    x = 158,566.88

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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.