Home / 129,742.56-179,146.08-101,528.64

Finding the Fourth Proportional to 129,742.56, 179,146.08 and 101,528.64

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Solution

The fourth proportional to 129,742.56, 179,146.08 and 101,528.64 is: 140,188.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,742.56 : 179,146.08 = 101,528.64 : x
  2. Step 2: Convert to fraction form
    129,742.56/179,146.08 = 101,528.64/x
  3. Step 3: Cross multiply
    129,742.56x = 179,146.08 × 101,528.64
  4. Step 4: Simplify right side
    129,742.56x = 18,188,457,863.73
  5. Step 5: Solve for x
    x = 18,188,457,863.73/129,742.56
  6. Step 6: Final answer
    x = 140,188.83

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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.