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Finding the Fourth Proportional to 172,598.85, 258,923.79 and 88,406.64

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Solution

The fourth proportional to 172,598.85, 258,923.79 and 88,406.64 is: 132,623.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,598.85 : 258,923.79 = 88,406.64 : x
  2. Step 2: Convert to fraction form
    172,598.85/258,923.79 = 88,406.64/x
  3. Step 3: Cross multiply
    172,598.85x = 258,923.79 × 88,406.64
  4. Step 4: Simplify right side
    172,598.85x = 22,890,582,289.97
  5. Step 5: Solve for x
    x = 22,890,582,289.97/172,598.85
  6. Step 6: Final answer
    x = 132,623.03

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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.