Home / 100,651.03-138,898.87-55,331.93

Finding the Fourth Proportional to 100,651.03, 138,898.87 and 55,331.93

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Solution

The fourth proportional to 100,651.03, 138,898.87 and 55,331.93 is: 76,358.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,651.03 : 138,898.87 = 55,331.93 : x
  2. Step 2: Convert to fraction form
    100,651.03/138,898.87 = 55,331.93/x
  3. Step 3: Cross multiply
    100,651.03x = 138,898.87 × 55,331.93
  4. Step 4: Simplify right side
    100,651.03x = 7,685,541,719.09
  5. Step 5: Solve for x
    x = 7,685,541,719.09/100,651.03
  6. Step 6: Final answer
    x = 76,358.30

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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.