Home / 129,618.32-178,896.48-75,900.20

Finding the Fourth Proportional to 129,618.32, 178,896.48 and 75,900.20

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Solution

The fourth proportional to 129,618.32, 178,896.48 and 75,900.20 is: 104,755.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,618.32 : 178,896.48 = 75,900.20 : x
  2. Step 2: Convert to fraction form
    129,618.32/178,896.48 = 75,900.20/x
  3. Step 3: Cross multiply
    129,618.32x = 178,896.48 × 75,900.20
  4. Step 4: Simplify right side
    129,618.32x = 13,578,278,611.30
  5. Step 5: Solve for x
    x = 13,578,278,611.30/129,618.32
  6. Step 6: Final answer
    x = 104,755.86

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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.