Home / 100,651.94-138,901.43-55,331.83

Finding the Fourth Proportional to 100,651.94, 138,901.43 and 55,331.83

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Solution

The fourth proportional to 100,651.94, 138,901.43 and 55,331.83 is: 76,358.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,651.94 : 138,901.43 = 55,331.83 : x
  2. Step 2: Convert to fraction form
    100,651.94/138,901.43 = 55,331.83/x
  3. Step 3: Cross multiply
    100,651.94x = 138,901.43 × 55,331.83
  4. Step 4: Simplify right side
    100,651.94x = 7,685,670,242.35
  5. Step 5: Solve for x
    x = 7,685,670,242.35/100,651.94
  6. Step 6: Final answer
    x = 76,358.89

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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.