Home / 131,285.10-196,668.45-78,537.90

Finding the Fourth Proportional to 131,285.10, 196,668.45 and 78,537.90

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Solution

The fourth proportional to 131,285.10, 196,668.45 and 78,537.90 is: 117,651.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,285.10 : 196,668.45 = 78,537.90 : x
  2. Step 2: Convert to fraction form
    131,285.10/196,668.45 = 78,537.90/x
  3. Step 3: Cross multiply
    131,285.10x = 196,668.45 × 78,537.90
  4. Step 4: Simplify right side
    131,285.10x = 15,445,927,059.26
  5. Step 5: Solve for x
    x = 15,445,927,059.26/131,285.10
  6. Step 6: Final answer
    x = 117,651.79

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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.