Home / 135,678.70-187,248.11-75,268.81

Finding the Fourth Proportional to 135,678.70, 187,248.11 and 75,268.81

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Solution

The fourth proportional to 135,678.70, 187,248.11 and 75,268.81 is: 103,877.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,678.70 : 187,248.11 = 75,268.81 : x
  2. Step 2: Convert to fraction form
    135,678.70/187,248.11 = 75,268.81/x
  3. Step 3: Cross multiply
    135,678.70x = 187,248.11 × 75,268.81
  4. Step 4: Simplify right side
    135,678.70x = 14,093,942,414.45
  5. Step 5: Solve for x
    x = 14,093,942,414.45/135,678.70
  6. Step 6: Final answer
    x = 103,877.34

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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.