Home / 154,433.88-231,258.78-129,408.12

Finding the Fourth Proportional to 154,433.88, 231,258.78 and 129,408.12

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Solution

The fourth proportional to 154,433.88, 231,258.78 and 129,408.12 is: 193,783.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,433.88 : 231,258.78 = 129,408.12 : x
  2. Step 2: Convert to fraction form
    154,433.88/231,258.78 = 129,408.12/x
  3. Step 3: Cross multiply
    154,433.88x = 231,258.78 × 129,408.12
  4. Step 4: Simplify right side
    154,433.88x = 29,926,763,953.29
  5. Step 5: Solve for x
    x = 29,926,763,953.29/154,433.88
  6. Step 6: Final answer
    x = 193,783.67

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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.