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Finding the Fourth Proportional to 100,858.80, 151,288.20 and 45,562.80

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Solution

The fourth proportional to 100,858.80, 151,288.20 and 45,562.80 is: 68,344.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,858.80 : 151,288.20 = 45,562.80 : x
  2. Step 2: Convert to fraction form
    100,858.80/151,288.20 = 45,562.80/x
  3. Step 3: Cross multiply
    100,858.80x = 151,288.20 × 45,562.80
  4. Step 4: Simplify right side
    100,858.80x = 6,893,113,998.96
  5. Step 5: Solve for x
    x = 6,893,113,998.96/100,858.80
  6. Step 6: Final answer
    x = 68,344.20

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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.