Home / 154,138.40-231,207.60-43,330.40

Finding the Fourth Proportional to 154,138.40, 231,207.60 and 43,330.40

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Solution

The fourth proportional to 154,138.40, 231,207.60 and 43,330.40 is: 64,995.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,138.40 : 231,207.60 = 43,330.40 : x
  2. Step 2: Convert to fraction form
    154,138.40/231,207.60 = 43,330.40/x
  3. Step 3: Cross multiply
    154,138.40x = 231,207.60 × 43,330.40
  4. Step 4: Simplify right side
    154,138.40x = 10,018,317,791.04
  5. Step 5: Solve for x
    x = 10,018,317,791.04/154,138.40
  6. Step 6: Final answer
    x = 64,995.60

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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.