Home / 100,721.28-151,085.28-30,600.36

Finding the Fourth Proportional to 100,721.28, 151,085.28 and 30,600.36

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Solution

The fourth proportional to 100,721.28, 151,085.28 and 30,600.36 is: 45,901.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,721.28 : 151,085.28 = 30,600.36 : x
  2. Step 2: Convert to fraction form
    100,721.28/151,085.28 = 30,600.36/x
  3. Step 3: Cross multiply
    100,721.28x = 151,085.28 × 30,600.36
  4. Step 4: Simplify right side
    100,721.28x = 4,623,263,958.70
  5. Step 5: Solve for x
    x = 4,623,263,958.70/100,721.28
  6. Step 6: Final answer
    x = 45,901.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.