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Finding the Fourth Proportional to 135,969.93, 187,638.80 and 75,544.34

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Solution

The fourth proportional to 135,969.93, 187,638.80 and 75,544.34 is: 104,251.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,969.93 : 187,638.80 = 75,544.34 : x
  2. Step 2: Convert to fraction form
    135,969.93/187,638.80 = 75,544.34/x
  3. Step 3: Cross multiply
    135,969.93x = 187,638.80 × 75,544.34
  4. Step 4: Simplify right side
    135,969.93x = 14,175,047,988.48
  5. Step 5: Solve for x
    x = 14,175,047,988.48/135,969.93
  6. Step 6: Final answer
    x = 104,251.34

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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.