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Finding the Fourth Proportional to 100,865.52, 151,391.70 and 50,980.86

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Solution

The fourth proportional to 100,865.52, 151,391.70 and 50,980.86 is: 76,518.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,865.52 : 151,391.70 = 50,980.86 : x
  2. Step 2: Convert to fraction form
    100,865.52/151,391.70 = 50,980.86/x
  3. Step 3: Cross multiply
    100,865.52x = 151,391.70 × 50,980.86
  4. Step 4: Simplify right side
    100,865.52x = 7,718,079,062.86
  5. Step 5: Solve for x
    x = 7,718,079,062.86/100,865.52
  6. Step 6: Final answer
    x = 76,518.51

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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.