Home / 129,630.38-178,889.94-70,014.38

Finding the Fourth Proportional to 129,630.38, 178,889.94 and 70,014.38

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Solution

The fourth proportional to 129,630.38, 178,889.94 and 70,014.38 is: 96,619.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,630.38 : 178,889.94 = 70,014.38 : x
  2. Step 2: Convert to fraction form
    129,630.38/178,889.94 = 70,014.38/x
  3. Step 3: Cross multiply
    129,630.38x = 178,889.94 × 70,014.38
  4. Step 4: Simplify right side
    129,630.38x = 12,524,867,342.89
  5. Step 5: Solve for x
    x = 12,524,867,342.89/129,630.38
  6. Step 6: Final answer
    x = 96,619.85

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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.