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Finding the Fourth Proportional to 172,972.40, 259,458.60 and 164,807.60

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Solution

The fourth proportional to 172,972.40, 259,458.60 and 164,807.60 is: 247,211.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,972.40 : 259,458.60 = 164,807.60 : x
  2. Step 2: Convert to fraction form
    172,972.40/259,458.60 = 164,807.60/x
  3. Step 3: Cross multiply
    172,972.40x = 259,458.60 × 164,807.60
  4. Step 4: Simplify right side
    172,972.40x = 42,760,749,165.36
  5. Step 5: Solve for x
    x = 42,760,749,165.36/172,972.40
  6. Step 6: Final answer
    x = 247,211.40

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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.