Home / 129,141.32-194,003.60-76,585.28

Finding the Fourth Proportional to 129,141.32, 194,003.60 and 76,585.28

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Solution

The fourth proportional to 129,141.32, 194,003.60 and 76,585.28 is: 115,050.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,141.32 : 194,003.60 = 76,585.28 : x
  2. Step 2: Convert to fraction form
    129,141.32/194,003.60 = 76,585.28/x
  3. Step 3: Cross multiply
    129,141.32x = 194,003.60 × 76,585.28
  4. Step 4: Simplify right side
    129,141.32x = 14,857,820,027.01
  5. Step 5: Solve for x
    x = 14,857,820,027.01/129,141.32
  6. Step 6: Final answer
    x = 115,050.86

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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.