Home / 131,961.48-197,911.88-78,668.52

Finding the Fourth Proportional to 131,961.48, 197,911.88 and 78,668.52

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Solution

The fourth proportional to 131,961.48, 197,911.88 and 78,668.52 is: 117,984.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,961.48 : 197,911.88 = 78,668.52 : x
  2. Step 2: Convert to fraction form
    131,961.48/197,911.88 = 78,668.52/x
  3. Step 3: Cross multiply
    131,961.48x = 197,911.88 × 78,668.52
  4. Step 4: Simplify right side
    131,961.48x = 15,569,434,690.02
  5. Step 5: Solve for x
    x = 15,569,434,690.02/131,961.48
  6. Step 6: Final answer
    x = 117,984.69

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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.