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Finding the Fourth Proportional to 172,973.28, 259,379.28 and 89,844.96

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Solution

The fourth proportional to 172,973.28, 259,379.28 and 89,844.96 is: 134,725.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,973.28 : 259,379.28 = 89,844.96 : x
  2. Step 2: Convert to fraction form
    172,973.28/259,379.28 = 89,844.96/x
  3. Step 3: Cross multiply
    172,973.28x = 259,379.28 × 89,844.96
  4. Step 4: Simplify right side
    172,973.28x = 23,303,921,036.43
  5. Step 5: Solve for x
    x = 23,303,921,036.43/172,973.28
  6. Step 6: Final answer
    x = 134,725.55

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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.