Home / 112,930.86-169,100.35-79,469.76

Finding the Fourth Proportional to 112,930.86, 169,100.35 and 79,469.76

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Solution

The fourth proportional to 112,930.86, 169,100.35 and 79,469.76 is: 118,996.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,930.86 : 169,100.35 = 79,469.76 : x
  2. Step 2: Convert to fraction form
    112,930.86/169,100.35 = 79,469.76/x
  3. Step 3: Cross multiply
    112,930.86x = 169,100.35 × 79,469.76
  4. Step 4: Simplify right side
    112,930.86x = 13,438,364,230.42
  5. Step 5: Solve for x
    x = 13,438,364,230.42/112,930.86
  6. Step 6: Final answer
    x = 118,996.39

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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.