Home / 129,710.20-194,457.30-54,887.80

Finding the Fourth Proportional to 129,710.20, 194,457.30 and 54,887.80

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Solution

The fourth proportional to 129,710.20, 194,457.30 and 54,887.80 is: 82,286.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,710.20 : 194,457.30 = 54,887.80 : x
  2. Step 2: Convert to fraction form
    129,710.20/194,457.30 = 54,887.80/x
  3. Step 3: Cross multiply
    129,710.20x = 194,457.30 × 54,887.80
  4. Step 4: Simplify right side
    129,710.20x = 10,673,333,390.94
  5. Step 5: Solve for x
    x = 10,673,333,390.94/129,710.20
  6. Step 6: Final answer
    x = 82,286.00

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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.