Home / 154,438.40-231,463.20-136,942.40

Finding the Fourth Proportional to 154,438.40, 231,463.20 and 136,942.40

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Solution

The fourth proportional to 154,438.40, 231,463.20 and 136,942.40 is: 205,241.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,438.40 : 231,463.20 = 136,942.40 : x
  2. Step 2: Convert to fraction form
    154,438.40/231,463.20 = 136,942.40/x
  3. Step 3: Cross multiply
    154,438.40x = 231,463.20 × 136,942.40
  4. Step 4: Simplify right side
    154,438.40x = 31,697,126,119.68
  5. Step 5: Solve for x
    x = 31,697,126,119.68/154,438.40
  6. Step 6: Final answer
    x = 205,241.22

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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.