Home / 135,218.89-186,579.77-74,777.72

Finding the Fourth Proportional to 135,218.89, 186,579.77 and 74,777.72

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Solution

The fourth proportional to 135,218.89, 186,579.77 and 74,777.72 is: 103,180.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,218.89 : 186,579.77 = 74,777.72 : x
  2. Step 2: Convert to fraction form
    135,218.89/186,579.77 = 74,777.72/x
  3. Step 3: Cross multiply
    135,218.89x = 186,579.77 × 74,777.72
  4. Step 4: Simplify right side
    135,218.89x = 13,952,009,891.29
  5. Step 5: Solve for x
    x = 13,952,009,891.29/135,218.89
  6. Step 6: Final answer
    x = 103,180.93

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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.