Home / 135,412.14-186,868.64-74,982.79

Finding the Fourth Proportional to 135,412.14, 186,868.64 and 74,982.79

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Solution

The fourth proportional to 135,412.14, 186,868.64 and 74,982.79 is: 103,476.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,412.14 : 186,868.64 = 74,982.79 : x
  2. Step 2: Convert to fraction form
    135,412.14/186,868.64 = 74,982.79/x
  3. Step 3: Cross multiply
    135,412.14x = 186,868.64 × 74,982.79
  4. Step 4: Simplify right side
    135,412.14x = 14,011,931,268.56
  5. Step 5: Solve for x
    x = 14,011,931,268.56/135,412.14
  6. Step 6: Final answer
    x = 103,476.18

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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.