Home / 135,301.56-186,716.46-74,876.60

Finding the Fourth Proportional to 135,301.56, 186,716.46 and 74,876.60

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Solution

The fourth proportional to 135,301.56, 186,716.46 and 74,876.60 is: 103,329.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,301.56 : 186,716.46 = 74,876.60 : x
  2. Step 2: Convert to fraction form
    135,301.56/186,716.46 = 74,876.60/x
  3. Step 3: Cross multiply
    135,301.56x = 186,716.46 × 74,876.60
  4. Step 4: Simplify right side
    135,301.56x = 13,980,693,688.84
  5. Step 5: Solve for x
    x = 13,980,693,688.84/135,301.56
  6. Step 6: Final answer
    x = 103,329.88

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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.