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Finding the Fourth Proportional to 136,902.70, 188,924.92 and 76,473.16

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Solution

The fourth proportional to 136,902.70, 188,924.92 and 76,473.16 is: 105,532.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,902.70 : 188,924.92 = 76,473.16 : x
  2. Step 2: Convert to fraction form
    136,902.70/188,924.92 = 76,473.16/x
  3. Step 3: Cross multiply
    136,902.70x = 188,924.92 × 76,473.16
  4. Step 4: Simplify right side
    136,902.70x = 14,447,684,971.65
  5. Step 5: Solve for x
    x = 14,447,684,971.65/136,902.70
  6. Step 6: Final answer
    x = 105,532.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.