Home / 154,431.88-231,255.78-129,406.12

Finding the Fourth Proportional to 154,431.88, 231,255.78 and 129,406.12

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Solution

The fourth proportional to 154,431.88, 231,255.78 and 129,406.12 is: 193,780.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,431.88 : 231,255.78 = 129,406.12 : x
  2. Step 2: Convert to fraction form
    154,431.88/231,255.78 = 129,406.12/x
  3. Step 3: Cross multiply
    154,431.88x = 231,255.78 × 129,406.12
  4. Step 4: Simplify right side
    154,431.88x = 29,925,913,217.37
  5. Step 5: Solve for x
    x = 29,925,913,217.37/154,431.88
  6. Step 6: Final answer
    x = 193,780.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.