Home / 135,541.89-186,942.33-81,770.85

Finding the Fourth Proportional to 135,541.89, 186,942.33 and 81,770.85

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Solution

The fourth proportional to 135,541.89, 186,942.33 and 81,770.85 is: 112,780.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,541.89 : 186,942.33 = 81,770.85 : x
  2. Step 2: Convert to fraction form
    135,541.89/186,942.33 = 81,770.85/x
  3. Step 3: Cross multiply
    135,541.89x = 186,942.33 × 81,770.85
  4. Step 4: Simplify right side
    135,541.89x = 15,286,433,225.08
  5. Step 5: Solve for x
    x = 15,286,433,225.08/135,541.89
  6. Step 6: Final answer
    x = 112,780.14

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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.