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Finding the Fourth Proportional to 98,237.60, 147,134.84 and 68,786.91

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Solution

The fourth proportional to 98,237.60, 147,134.84 and 68,786.91 is: 103,025.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,237.60 : 147,134.84 = 68,786.91 : x
  2. Step 2: Convert to fraction form
    98,237.60/147,134.84 = 68,786.91/x
  3. Step 3: Cross multiply
    98,237.60x = 147,134.84 × 68,786.91
  4. Step 4: Simplify right side
    98,237.60x = 10,120,951,168.91
  5. Step 5: Solve for x
    x = 10,120,951,168.91/98,237.60
  6. Step 6: Final answer
    x = 103,025.23

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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.