Home / 129,385.36-194,076.41-45,145.36

Finding the Fourth Proportional to 129,385.36, 194,076.41 and 45,145.36

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Solution

The fourth proportional to 129,385.36, 194,076.41 and 45,145.36 is: 67,717.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,385.36 : 194,076.41 = 45,145.36 : x
  2. Step 2: Convert to fraction form
    129,385.36/194,076.41 = 45,145.36/x
  3. Step 3: Cross multiply
    129,385.36x = 194,076.41 × 45,145.36
  4. Step 4: Simplify right side
    129,385.36x = 8,761,648,426.58
  5. Step 5: Solve for x
    x = 8,761,648,426.58/129,385.36
  6. Step 6: Final answer
    x = 67,717.47

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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.