Home / 129,701.01-179,134.83-87,185.73

Finding the Fourth Proportional to 129,701.01, 179,134.83 and 87,185.73

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Solution

The fourth proportional to 129,701.01, 179,134.83 and 87,185.73 is: 120,415.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,701.01 : 179,134.83 = 87,185.73 : x
  2. Step 2: Convert to fraction form
    129,701.01/179,134.83 = 87,185.73/x
  3. Step 3: Cross multiply
    129,701.01x = 179,134.83 × 87,185.73
  4. Step 4: Simplify right side
    129,701.01x = 15,618,000,921.98
  5. Step 5: Solve for x
    x = 15,618,000,921.98/129,701.01
  6. Step 6: Final answer
    x = 120,415.41

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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.