Home / 135,418.43-186,875.12-74,987.77

Finding the Fourth Proportional to 135,418.43, 186,875.12 and 74,987.77

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Solution

The fourth proportional to 135,418.43, 186,875.12 and 74,987.77 is: 103,481.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,418.43 : 186,875.12 = 74,987.77 : x
  2. Step 2: Convert to fraction form
    135,418.43/186,875.12 = 74,987.77/x
  3. Step 3: Cross multiply
    135,418.43x = 186,875.12 × 74,987.77
  4. Step 4: Simplify right side
    135,418.43x = 14,013,347,207.97
  5. Step 5: Solve for x
    x = 14,013,347,207.97/135,418.43
  6. Step 6: Final answer
    x = 103,481.84

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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.