Home / 154,979.40-232,469.10-128,735.40

Finding the Fourth Proportional to 154,979.40, 232,469.10 and 128,735.40

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Solution

The fourth proportional to 154,979.40, 232,469.10 and 128,735.40 is: 193,103.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,979.40 : 232,469.10 = 128,735.40 : x
  2. Step 2: Convert to fraction form
    154,979.40/232,469.10 = 128,735.40/x
  3. Step 3: Cross multiply
    154,979.40x = 232,469.10 × 128,735.40
  4. Step 4: Simplify right side
    154,979.40x = 29,927,002,576.14
  5. Step 5: Solve for x
    x = 29,927,002,576.14/154,979.40
  6. Step 6: Final answer
    x = 193,103.10

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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.