Home / 136,663.20-188,315.28-100,796.40

Finding the Fourth Proportional to 136,663.20, 188,315.28 and 100,796.40

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Solution

The fourth proportional to 136,663.20, 188,315.28 and 100,796.40 is: 138,892.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,663.20 : 188,315.28 = 100,796.40 : x
  2. Step 2: Convert to fraction form
    136,663.20/188,315.28 = 100,796.40/x
  3. Step 3: Cross multiply
    136,663.20x = 188,315.28 × 100,796.40
  4. Step 4: Simplify right side
    136,663.20x = 18,981,502,288.99
  5. Step 5: Solve for x
    x = 18,981,502,288.99/136,663.20
  6. Step 6: Final answer
    x = 138,892.56

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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.