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Finding the Fourth Proportional to 156,322.35, 215,723.93 and 88,361.33

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Solution

The fourth proportional to 156,322.35, 215,723.93 and 88,361.33 is: 121,938.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,322.35 : 215,723.93 = 88,361.33 : x
  2. Step 2: Convert to fraction form
    156,322.35/215,723.93 = 88,361.33/x
  3. Step 3: Cross multiply
    156,322.35x = 215,723.93 × 88,361.33
  4. Step 4: Simplify right side
    156,322.35x = 19,061,651,847.20
  5. Step 5: Solve for x
    x = 19,061,651,847.20/156,322.35
  6. Step 6: Final answer
    x = 121,938.11

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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.