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Finding the Fourth Proportional to 131,657.34, 197,448.30 and 42,918.60

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Solution

The fourth proportional to 131,657.34, 197,448.30 and 42,918.60 is: 64,365.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,657.34 : 197,448.30 = 42,918.60 : x
  2. Step 2: Convert to fraction form
    131,657.34/197,448.30 = 42,918.60/x
  3. Step 3: Cross multiply
    131,657.34x = 197,448.30 × 42,918.60
  4. Step 4: Simplify right side
    131,657.34x = 8,474,204,608.38
  5. Step 5: Solve for x
    x = 8,474,204,608.38/131,657.34
  6. Step 6: Final answer
    x = 64,365.61

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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.