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Finding the Fourth Proportional to 172,839.70, 259,259.55 and 54,520.27

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Solution

The fourth proportional to 172,839.70, 259,259.55 and 54,520.27 is: 81,780.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,839.70 : 259,259.55 = 54,520.27 : x
  2. Step 2: Convert to fraction form
    172,839.70/259,259.55 = 54,520.27/x
  3. Step 3: Cross multiply
    172,839.70x = 259,259.55 × 54,520.27
  4. Step 4: Simplify right side
    172,839.70x = 14,134,900,666.08
  5. Step 5: Solve for x
    x = 14,134,900,666.08/172,839.70
  6. Step 6: Final answer
    x = 81,780.41

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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.