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Finding the Fourth Proportional to 136,487.46, 188,350.74 and 76,060.65

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Solution

The fourth proportional to 136,487.46, 188,350.74 and 76,060.65 is: 104,962.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,487.46 : 188,350.74 = 76,060.65 : x
  2. Step 2: Convert to fraction form
    136,487.46/188,350.74 = 76,060.65/x
  3. Step 3: Cross multiply
    136,487.46x = 188,350.74 × 76,060.65
  4. Step 4: Simplify right side
    136,487.46x = 14,326,079,712.38
  5. Step 5: Solve for x
    x = 14,326,079,712.38/136,487.46
  6. Step 6: Final answer
    x = 104,962.61

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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.