Home / 117,819.38-162,537.90-79,566.50

Finding the Fourth Proportional to 117,819.38, 162,537.90 and 79,566.50

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Solution

The fourth proportional to 117,819.38, 162,537.90 and 79,566.50 is: 109,766.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,819.38 : 162,537.90 = 79,566.50 : x
  2. Step 2: Convert to fraction form
    117,819.38/162,537.90 = 79,566.50/x
  3. Step 3: Cross multiply
    117,819.38x = 162,537.90 × 79,566.50
  4. Step 4: Simplify right side
    117,819.38x = 12,932,571,820.35
  5. Step 5: Solve for x
    x = 12,932,571,820.35/117,819.38
  6. Step 6: Final answer
    x = 109,766.08

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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.