Home / 129,091.32-194,227.47-76,537.71

Finding the Fourth Proportional to 129,091.32, 194,227.47 and 76,537.71

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Solution

The fourth proportional to 129,091.32, 194,227.47 and 76,537.71 is: 115,156.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,091.32 : 194,227.47 = 76,537.71 : x
  2. Step 2: Convert to fraction form
    129,091.32/194,227.47 = 76,537.71/x
  3. Step 3: Cross multiply
    129,091.32x = 194,227.47 × 76,537.71
  4. Step 4: Simplify right side
    129,091.32x = 14,865,725,772.89
  5. Step 5: Solve for x
    x = 14,865,725,772.89/129,091.32
  6. Step 6: Final answer
    x = 115,156.66

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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.