Home / 135,329.31-186,757.47-87,665.58

Finding the Fourth Proportional to 135,329.31, 186,757.47 and 87,665.58

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Solution

The fourth proportional to 135,329.31, 186,757.47 and 87,665.58 is: 120,980.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,329.31 : 186,757.47 = 87,665.58 : x
  2. Step 2: Convert to fraction form
    135,329.31/186,757.47 = 87,665.58/x
  3. Step 3: Cross multiply
    135,329.31x = 186,757.47 × 87,665.58
  4. Step 4: Simplify right side
    135,329.31x = 16,372,201,926.88
  5. Step 5: Solve for x
    x = 16,372,201,926.88/135,329.31
  6. Step 6: Final answer
    x = 120,980.46

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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.