Home / 123,991.36-171,108.25-67,402.73

Finding the Fourth Proportional to 123,991.36, 171,108.25 and 67,402.73

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Solution

The fourth proportional to 123,991.36, 171,108.25 and 67,402.73 is: 93,015.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,991.36 : 171,108.25 = 67,402.73 : x
  2. Step 2: Convert to fraction form
    123,991.36/171,108.25 = 67,402.73/x
  3. Step 3: Cross multiply
    123,991.36x = 171,108.25 × 67,402.73
  4. Step 4: Simplify right side
    123,991.36x = 11,533,163,434.79
  5. Step 5: Solve for x
    x = 11,533,163,434.79/123,991.36
  6. Step 6: Final answer
    x = 93,015.87

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1.5x scale

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.