Home / 129,415.16-194,123.82-40,666.70

Finding the Fourth Proportional to 129,415.16, 194,123.82 and 40,666.70

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Solution

The fourth proportional to 129,415.16, 194,123.82 and 40,666.70 is: 61,000.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,415.16 : 194,123.82 = 40,666.70 : x
  2. Step 2: Convert to fraction form
    129,415.16/194,123.82 = 40,666.70/x
  3. Step 3: Cross multiply
    129,415.16x = 194,123.82 × 40,666.70
  4. Step 4: Simplify right side
    129,415.16x = 7,894,375,150.79
  5. Step 5: Solve for x
    x = 7,894,375,150.79/129,415.16
  6. Step 6: Final answer
    x = 61,000.39

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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.