Home / 129,530.47-194,321.89-54,650.80

Finding the Fourth Proportional to 129,530.47, 194,321.89 and 54,650.80

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Solution

The fourth proportional to 129,530.47, 194,321.89 and 54,650.80 is: 81,987.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,530.47 : 194,321.89 = 54,650.80 : x
  2. Step 2: Convert to fraction form
    129,530.47/194,321.89 = 54,650.80/x
  3. Step 3: Cross multiply
    129,530.47x = 194,321.89 × 54,650.80
  4. Step 4: Simplify right side
    129,530.47x = 10,619,845,774.40
  5. Step 5: Solve for x
    x = 10,619,845,774.40/129,530.47
  6. Step 6: Final answer
    x = 81,987.24

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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.