Home / 100,383.66-138,527.05-55,061.24

Finding the Fourth Proportional to 100,383.66, 138,527.05 and 55,061.24

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Solution

The fourth proportional to 100,383.66, 138,527.05 and 55,061.24 is: 75,983.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,383.66 : 138,527.05 = 55,061.24 : x
  2. Step 2: Convert to fraction form
    100,383.66/138,527.05 = 55,061.24/x
  3. Step 3: Cross multiply
    100,383.66x = 138,527.05 × 55,061.24
  4. Step 4: Simplify right side
    100,383.66x = 7,627,470,453.91
  5. Step 5: Solve for x
    x = 7,627,470,453.91/100,383.66
  6. Step 6: Final answer
    x = 75,983.19

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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.