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Finding the Fourth Proportional to 129,876.40, 194,814.60 and 115,004.80

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Solution

The fourth proportional to 129,876.40, 194,814.60 and 115,004.80 is: 172,507.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,876.40 : 194,814.60 = 115,004.80 : x
  2. Step 2: Convert to fraction form
    129,876.40/194,814.60 = 115,004.80/x
  3. Step 3: Cross multiply
    129,876.40x = 194,814.60 × 115,004.80
  4. Step 4: Simplify right side
    129,876.40x = 22,404,614,110.08
  5. Step 5: Solve for x
    x = 22,404,614,110.08/129,876.40
  6. Step 6: Final answer
    x = 172,507.20

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1.5x scale

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.