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Finding the Fourth Proportional to 103,018.70, 154,251.20 and 65,374.97

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Solution

The fourth proportional to 103,018.70, 154,251.20 and 65,374.97 is: 97,886.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,018.70 : 154,251.20 = 65,374.97 : x
  2. Step 2: Convert to fraction form
    103,018.70/154,251.20 = 65,374.97/x
  3. Step 3: Cross multiply
    103,018.70x = 154,251.20 × 65,374.97
  4. Step 4: Simplify right side
    103,018.70x = 10,084,166,964.65
  5. Step 5: Solve for x
    x = 10,084,166,964.65/103,018.70
  6. Step 6: Final answer
    x = 97,886.76

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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.