Home / 129,452.88-178,633.56-72,087.86

Finding the Fourth Proportional to 129,452.88, 178,633.56 and 72,087.86

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Solution

The fourth proportional to 129,452.88, 178,633.56 and 72,087.86 is: 99,474.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,452.88 : 178,633.56 = 72,087.86 : x
  2. Step 2: Convert to fraction form
    129,452.88/178,633.56 = 72,087.86/x
  3. Step 3: Cross multiply
    129,452.88x = 178,633.56 × 72,087.86
  4. Step 4: Simplify right side
    129,452.88x = 12,877,311,064.58
  5. Step 5: Solve for x
    x = 12,877,311,064.58/129,452.88
  6. Step 6: Final answer
    x = 99,474.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.