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Finding the Fourth Proportional to 141,668.61, 195,504 and 78,008.70

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Solution

The fourth proportional to 141,668.61, 195,504 and 78,008.70 is: 107,652.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,668.61 : 195,504 = 78,008.70 : x
  2. Step 2: Convert to fraction form
    141,668.61/195,504 = 78,008.70/x
  3. Step 3: Cross multiply
    141,668.61x = 195,504 × 78,008.70
  4. Step 4: Simplify right side
    141,668.61x = 15,251,012,884.80
  5. Step 5: Solve for x
    x = 15,251,012,884.80/141,668.61
  6. Step 6: Final answer
    x = 107,652.73

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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.