Home / 91,673.10-136,882.49-82,123.79

Finding the Fourth Proportional to 91,673.10, 136,882.49 and 82,123.79

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Solution

The fourth proportional to 91,673.10, 136,882.49 and 82,123.79 is: 122,623.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,673.10 : 136,882.49 = 82,123.79 : x
  2. Step 2: Convert to fraction form
    91,673.10/136,882.49 = 82,123.79/x
  3. Step 3: Cross multiply
    91,673.10x = 136,882.49 × 82,123.79
  4. Step 4: Simplify right side
    91,673.10x = 11,241,307,768.41
  5. Step 5: Solve for x
    x = 11,241,307,768.41/91,673.10
  6. Step 6: Final answer
    x = 122,623.84

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.