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Finding the Fourth Proportional to 172,403.54, 258,605.61 and 54,084.21

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Solution

The fourth proportional to 172,403.54, 258,605.61 and 54,084.21 is: 81,126.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,403.54 : 258,605.61 = 54,084.21 : x
  2. Step 2: Convert to fraction form
    172,403.54/258,605.61 = 54,084.21/x
  3. Step 3: Cross multiply
    172,403.54x = 258,605.61 × 54,084.21
  4. Step 4: Simplify right side
    172,403.54x = 13,986,480,118.42
  5. Step 5: Solve for x
    x = 13,986,480,118.42/172,403.54
  6. Step 6: Final answer
    x = 81,126.41

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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.