Home / 129,335.56-178,456.30-75,610.15

Finding the Fourth Proportional to 129,335.56, 178,456.30 and 75,610.15

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Solution

The fourth proportional to 129,335.56, 178,456.30 and 75,610.15 is: 104,326.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,335.56 : 178,456.30 = 75,610.15 : x
  2. Step 2: Convert to fraction form
    129,335.56/178,456.30 = 75,610.15/x
  3. Step 3: Cross multiply
    129,335.56x = 178,456.30 × 75,610.15
  4. Step 4: Simplify right side
    129,335.56x = 13,493,107,611.45
  5. Step 5: Solve for x
    x = 13,493,107,611.45/129,335.56
  6. Step 6: Final answer
    x = 104,326.36

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1.5x scale

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.