Home / 135,056.78-186,380.33-74,628.82

Finding the Fourth Proportional to 135,056.78, 186,380.33 and 74,628.82

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Solution

The fourth proportional to 135,056.78, 186,380.33 and 74,628.82 is: 102,988.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,056.78 : 186,380.33 = 74,628.82 : x
  2. Step 2: Convert to fraction form
    135,056.78/186,380.33 = 74,628.82/x
  3. Step 3: Cross multiply
    135,056.78x = 186,380.33 × 74,628.82
  4. Step 4: Simplify right side
    135,056.78x = 13,909,344,099.11
  5. Step 5: Solve for x
    x = 13,909,344,099.11/135,056.78
  6. Step 6: Final answer
    x = 102,988.86

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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.