Home / 129,857.40-194,786.10-114,985.80

Finding the Fourth Proportional to 129,857.40, 194,786.10 and 114,985.80

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Solution

The fourth proportional to 129,857.40, 194,786.10 and 114,985.80 is: 172,478.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,857.40 : 194,786.10 = 114,985.80 : x
  2. Step 2: Convert to fraction form
    129,857.40/194,786.10 = 114,985.80/x
  3. Step 3: Cross multiply
    129,857.40x = 194,786.10 × 114,985.80
  4. Step 4: Simplify right side
    129,857.40x = 22,397,635,537.38
  5. Step 5: Solve for x
    x = 22,397,635,537.38/129,857.40
  6. Step 6: Final answer
    x = 172,478.70

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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.