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Finding the Fourth Proportional to 141,912.96, 195,848.64 and 78,250.56

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Solution

The fourth proportional to 141,912.96, 195,848.64 and 78,250.56 is: 107,990.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,912.96 : 195,848.64 = 78,250.56 : x
  2. Step 2: Convert to fraction form
    141,912.96/195,848.64 = 78,250.56/x
  3. Step 3: Cross multiply
    141,912.96x = 195,848.64 × 78,250.56
  4. Step 4: Simplify right side
    141,912.96x = 15,325,265,755.24
  5. Step 5: Solve for x
    x = 15,325,265,755.24/141,912.96
  6. Step 6: Final answer
    x = 107,990.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.