Home / 156,450.96-215,902.56-84,830.64

Finding the Fourth Proportional to 156,450.96, 215,902.56 and 84,830.64

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Solution

The fourth proportional to 156,450.96, 215,902.56 and 84,830.64 is: 117,066.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,450.96 : 215,902.56 = 84,830.64 : x
  2. Step 2: Convert to fraction form
    156,450.96/215,902.56 = 84,830.64/x
  3. Step 3: Cross multiply
    156,450.96x = 215,902.56 × 84,830.64
  4. Step 4: Simplify right side
    156,450.96x = 18,315,152,342.44
  5. Step 5: Solve for x
    x = 18,315,152,342.44/156,450.96
  6. Step 6: Final answer
    x = 117,066.41

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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.