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Finding the Fourth Proportional to 168,394.48, 252,611.04 and 78,390.52

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Solution

The fourth proportional to 168,394.48, 252,611.04 and 78,390.52 is: 117,594.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,394.48 : 252,611.04 = 78,390.52 : x
  2. Step 2: Convert to fraction form
    168,394.48/252,611.04 = 78,390.52/x
  3. Step 3: Cross multiply
    168,394.48x = 252,611.04 × 78,390.52
  4. Step 4: Simplify right side
    168,394.48x = 19,802,310,783.34
  5. Step 5: Solve for x
    x = 19,802,310,783.34/168,394.48
  6. Step 6: Final answer
    x = 117,594.77

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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.