Home / 135,204.80-186,553.44-78,587.20

Finding the Fourth Proportional to 135,204.80, 186,553.44 and 78,587.20

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Solution

The fourth proportional to 135,204.80, 186,553.44 and 78,587.20 is: 108,433.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,204.80 : 186,553.44 = 78,587.20 : x
  2. Step 2: Convert to fraction form
    135,204.80/186,553.44 = 78,587.20/x
  3. Step 3: Cross multiply
    135,204.80x = 186,553.44 × 78,587.20
  4. Step 4: Simplify right side
    135,204.80x = 14,660,712,499.97
  5. Step 5: Solve for x
    x = 14,660,712,499.97/135,204.80
  6. Step 6: Final answer
    x = 108,433.37

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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.