Home / 135,403.30-186,798.66-81,657.76

Finding the Fourth Proportional to 135,403.30, 186,798.66 and 81,657.76

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Solution

The fourth proportional to 135,403.30, 186,798.66 and 81,657.76 is: 112,652.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,403.30 : 186,798.66 = 81,657.76 : x
  2. Step 2: Convert to fraction form
    135,403.30/186,798.66 = 81,657.76/x
  3. Step 3: Cross multiply
    135,403.30x = 186,798.66 × 81,657.76
  4. Step 4: Simplify right side
    135,403.30x = 15,253,560,146.60
  5. Step 5: Solve for x
    x = 15,253,560,146.60/135,403.30
  6. Step 6: Final answer
    x = 112,652.79

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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.