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Finding the Fourth Proportional to 136,096.88, 187,813.70 and 76,480.88

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Solution

The fourth proportional to 136,096.88, 187,813.70 and 76,480.88 is: 105,543.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,096.88 : 187,813.70 = 76,480.88 : x
  2. Step 2: Convert to fraction form
    136,096.88/187,813.70 = 76,480.88/x
  3. Step 3: Cross multiply
    136,096.88x = 187,813.70 × 76,480.88
  4. Step 4: Simplify right side
    136,096.88x = 14,364,155,730.58
  5. Step 5: Solve for x
    x = 14,364,155,730.58/136,096.88
  6. Step 6: Final answer
    x = 105,543.61

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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.