Home / 133,062.40-199,631.85-76,942.72

Finding the Fourth Proportional to 133,062.40, 199,631.85 and 76,942.72

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Solution

The fourth proportional to 133,062.40, 199,631.85 and 76,942.72 is: 115,436.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,062.40 : 199,631.85 = 76,942.72 : x
  2. Step 2: Convert to fraction form
    133,062.40/199,631.85 = 76,942.72/x
  3. Step 3: Cross multiply
    133,062.40x = 199,631.85 × 76,942.72
  4. Step 4: Simplify right side
    133,062.40x = 15,360,217,537.63
  5. Step 5: Solve for x
    x = 15,360,217,537.63/133,062.40
  6. Step 6: Final answer
    x = 115,436.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.