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Finding the Fourth Proportional to 115,297.96, 159,086.88 and 69,999.76

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Solution

The fourth proportional to 115,297.96, 159,086.88 and 69,999.76 is: 96,584.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,297.96 : 159,086.88 = 69,999.76 : x
  2. Step 2: Convert to fraction form
    115,297.96/159,086.88 = 69,999.76/x
  3. Step 3: Cross multiply
    115,297.96x = 159,086.88 × 69,999.76
  4. Step 4: Simplify right side
    115,297.96x = 11,136,043,419.15
  5. Step 5: Solve for x
    x = 11,136,043,419.15/115,297.96
  6. Step 6: Final answer
    x = 96,584.91

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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.