Home / 135,401.40-186,795.10-81,656.55

Finding the Fourth Proportional to 135,401.40, 186,795.10 and 81,656.55

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Solution

The fourth proportional to 135,401.40, 186,795.10 and 81,656.55 is: 112,650.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,401.40 : 186,795.10 = 81,656.55 : x
  2. Step 2: Convert to fraction form
    135,401.40/186,795.10 = 81,656.55/x
  3. Step 3: Cross multiply
    135,401.40x = 186,795.10 × 81,656.55
  4. Step 4: Simplify right side
    135,401.40x = 15,253,043,422.91
  5. Step 5: Solve for x
    x = 15,253,043,422.91/135,401.40
  6. Step 6: Final answer
    x = 112,650.56

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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.