Home / 100,341.13-138,472.37-55,023.25

Finding the Fourth Proportional to 100,341.13, 138,472.37 and 55,023.25

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Solution

The fourth proportional to 100,341.13, 138,472.37 and 55,023.25 is: 75,932.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,341.13 : 138,472.37 = 55,023.25 : x
  2. Step 2: Convert to fraction form
    100,341.13/138,472.37 = 55,023.25/x
  3. Step 3: Cross multiply
    100,341.13x = 138,472.37 × 55,023.25
  4. Step 4: Simplify right side
    100,341.13x = 7,619,199,832.60
  5. Step 5: Solve for x
    x = 7,619,199,832.60/100,341.13
  6. Step 6: Final answer
    x = 75,932.97

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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.