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Finding the Fourth Proportional to 172,445.89, 258,734.67 and 67,273.06

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Solution

The fourth proportional to 172,445.89, 258,734.67 and 67,273.06 is: 100,935.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,445.89 : 258,734.67 = 67,273.06 : x
  2. Step 2: Convert to fraction form
    172,445.89/258,734.67 = 67,273.06/x
  3. Step 3: Cross multiply
    172,445.89x = 258,734.67 × 67,273.06
  4. Step 4: Simplify right side
    172,445.89x = 17,405,872,943.42
  5. Step 5: Solve for x
    x = 17,405,872,943.42/172,445.89
  6. Step 6: Final answer
    x = 100,935.27

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1.5x scale

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.