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Finding the Fourth Proportional to 172,746.60, 259,119.90 and 54,429.90

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Solution

The fourth proportional to 172,746.60, 259,119.90 and 54,429.90 is: 81,644.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,746.60 : 259,119.90 = 54,429.90 : x
  2. Step 2: Convert to fraction form
    172,746.60/259,119.90 = 54,429.90/x
  3. Step 3: Cross multiply
    172,746.60x = 259,119.90 × 54,429.90
  4. Step 4: Simplify right side
    172,746.60x = 14,103,870,245.01
  5. Step 5: Solve for x
    x = 14,103,870,245.01/172,746.60
  6. Step 6: Final answer
    x = 81,644.85

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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.