Home / 135,686.72-187,233.18-75,241.28

Finding the Fourth Proportional to 135,686.72, 187,233.18 and 75,241.28

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Solution

The fourth proportional to 135,686.72, 187,233.18 and 75,241.28 is: 103,824.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,686.72 : 187,233.18 = 75,241.28 : x
  2. Step 2: Convert to fraction form
    135,686.72/187,233.18 = 75,241.28/x
  3. Step 3: Cross multiply
    135,686.72x = 187,233.18 × 75,241.28
  4. Step 4: Simplify right side
    135,686.72x = 14,087,664,121.67
  5. Step 5: Solve for x
    x = 14,087,664,121.67/135,686.72
  6. Step 6: Final answer
    x = 103,824.93

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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.