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Finding the Fourth Proportional to 154,358.70, 231,775.65 and 84,374.70

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Solution

The fourth proportional to 154,358.70, 231,775.65 and 84,374.70 is: 126,691.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,358.70 : 231,775.65 = 84,374.70 : x
  2. Step 2: Convert to fraction form
    154,358.70/231,775.65 = 84,374.70/x
  3. Step 3: Cross multiply
    154,358.70x = 231,775.65 × 84,374.70
  4. Step 4: Simplify right side
    154,358.70x = 19,556,000,936.06
  5. Step 5: Solve for x
    x = 19,556,000,936.06/154,358.70
  6. Step 6: Final answer
    x = 126,691.93

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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.