Home / 135,174.46-186,538.81-74,743.78

Finding the Fourth Proportional to 135,174.46, 186,538.81 and 74,743.78

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Solution

The fourth proportional to 135,174.46, 186,538.81 and 74,743.78 is: 103,145.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,174.46 : 186,538.81 = 74,743.78 : x
  2. Step 2: Convert to fraction form
    135,174.46/186,538.81 = 74,743.78/x
  3. Step 3: Cross multiply
    135,174.46x = 186,538.81 × 74,743.78
  4. Step 4: Simplify right side
    135,174.46x = 13,942,615,776.10
  5. Step 5: Solve for x
    x = 13,942,615,776.10/135,174.46
  6. Step 6: Final answer
    x = 103,145.34

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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.