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Finding the Fourth Proportional to 131,361.86, 197,070.48 and 42,608.46

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Solution

The fourth proportional to 131,361.86, 197,070.48 and 42,608.46 is: 63,921.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,361.86 : 197,070.48 = 42,608.46 : x
  2. Step 2: Convert to fraction form
    131,361.86/197,070.48 = 42,608.46/x
  3. Step 3: Cross multiply
    131,361.86x = 197,070.48 × 42,608.46
  4. Step 4: Simplify right side
    131,361.86x = 8,396,869,664.26
  5. Step 5: Solve for x
    x = 8,396,869,664.26/131,361.86
  6. Step 6: Final answer
    x = 63,921.67

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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.