Home / 129,521.36-194,308.57-54,641.72

Finding the Fourth Proportional to 129,521.36, 194,308.57 and 54,641.72

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Solution

The fourth proportional to 129,521.36, 194,308.57 and 54,641.72 is: 81,973.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,521.36 : 194,308.57 = 54,641.72 : x
  2. Step 2: Convert to fraction form
    129,521.36/194,308.57 = 54,641.72/x
  3. Step 3: Cross multiply
    129,521.36x = 194,308.57 × 54,641.72
  4. Step 4: Simplify right side
    129,521.36x = 10,617,355,029.61
  5. Step 5: Solve for x
    x = 10,617,355,029.61/129,521.36
  6. Step 6: Final answer
    x = 81,973.78

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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.