Home / 130,179.64-179,778.90-112,173.88

Finding the Fourth Proportional to 130,179.64, 179,778.90 and 112,173.88

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Solution

The fourth proportional to 130,179.64, 179,778.90 and 112,173.88 is: 154,912.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,179.64 : 179,778.90 = 112,173.88 : x
  2. Step 2: Convert to fraction form
    130,179.64/179,778.90 = 112,173.88/x
  3. Step 3: Cross multiply
    130,179.64x = 179,778.90 × 112,173.88
  4. Step 4: Simplify right side
    130,179.64x = 20,166,496,755.13
  5. Step 5: Solve for x
    x = 20,166,496,755.13/130,179.64
  6. Step 6: Final answer
    x = 154,912.83

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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.