Home / 123,747.12-170,771.11-67,158.49

Finding the Fourth Proportional to 123,747.12, 170,771.11 and 67,158.49

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Solution

The fourth proportional to 123,747.12, 170,771.11 and 67,158.49 is: 92,678.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,747.12 : 170,771.11 = 67,158.49 : x
  2. Step 2: Convert to fraction form
    123,747.12/170,771.11 = 67,158.49/x
  3. Step 3: Cross multiply
    123,747.12x = 170,771.11 × 67,158.49
  4. Step 4: Simplify right side
    123,747.12x = 11,468,729,928.79
  5. Step 5: Solve for x
    x = 11,468,729,928.79/123,747.12
  6. Step 6: Final answer
    x = 92,678.77

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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.