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Finding the Fourth Proportional to 136,056.96, 187,770.42 and 75,639.42

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Solution

The fourth proportional to 136,056.96, 187,770.42 and 75,639.42 is: 104,388.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,056.96 : 187,770.42 = 75,639.42 : x
  2. Step 2: Convert to fraction form
    136,056.96/187,770.42 = 75,639.42/x
  3. Step 3: Cross multiply
    136,056.96x = 187,770.42 × 75,639.42
  4. Step 4: Simplify right side
    136,056.96x = 14,202,845,661.96
  5. Step 5: Solve for x
    x = 14,202,845,661.96/136,056.96
  6. Step 6: Final answer
    x = 104,388.97

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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.