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Finding the Fourth Proportional to 131,523.44, 197,334.84 and 78,969.56

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Solution

The fourth proportional to 131,523.44, 197,334.84 and 78,969.56 is: 118,484.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,523.44 : 197,334.84 = 78,969.56 : x
  2. Step 2: Convert to fraction form
    131,523.44/197,334.84 = 78,969.56/x
  3. Step 3: Cross multiply
    131,523.44x = 197,334.84 × 78,969.56
  4. Step 4: Simplify right side
    131,523.44x = 15,583,445,487.47
  5. Step 5: Solve for x
    x = 15,583,445,487.47/131,523.44
  6. Step 6: Final answer
    x = 118,484.17

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1.5x scale

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.