Home / 100,724-151,089.20-30,603.92

Finding the Fourth Proportional to 100,724, 151,089.20 and 30,603.92

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Solution

The fourth proportional to 100,724, 151,089.20 and 30,603.92 is: 45,906.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,724 : 151,089.20 = 30,603.92 : x
  2. Step 2: Convert to fraction form
    100,724/151,089.20 = 30,603.92/x
  3. Step 3: Cross multiply
    100,724x = 151,089.20 × 30,603.92
  4. Step 4: Simplify right side
    100,724x = 4,623,921,789.66
  5. Step 5: Solve for x
    x = 4,623,921,789.66/100,724
  6. Step 6: Final answer
    x = 45,906.85

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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.