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Finding the Fourth Proportional to 98,433.91, 135,904.17 and 75,732.85

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Solution

The fourth proportional to 98,433.91, 135,904.17 and 75,732.85 is: 104,561.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,433.91 : 135,904.17 = 75,732.85 : x
  2. Step 2: Convert to fraction form
    98,433.91/135,904.17 = 75,732.85/x
  3. Step 3: Cross multiply
    98,433.91x = 135,904.17 × 75,732.85
  4. Step 4: Simplify right side
    98,433.91x = 10,292,410,120.98
  5. Step 5: Solve for x
    x = 10,292,410,120.98/98,433.91
  6. Step 6: Final answer
    x = 104,561.63

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1.5x scale

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.