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Finding the Fourth Proportional to 154,908.80, 231,844.80 and 136,246.40

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Solution

The fourth proportional to 154,908.80, 231,844.80 and 136,246.40 is: 203,913.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,908.80 : 231,844.80 = 136,246.40 : x
  2. Step 2: Convert to fraction form
    154,908.80/231,844.80 = 136,246.40/x
  3. Step 3: Cross multiply
    154,908.80x = 231,844.80 × 136,246.40
  4. Step 4: Simplify right side
    154,908.80x = 31,588,019,358.72
  5. Step 5: Solve for x
    x = 31,588,019,358.72/154,908.80
  6. Step 6: Final answer
    x = 203,913.65

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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.