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Finding the Fourth Proportional to 102,562.20, 153,843.30 and 28,690.20

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Solution

The fourth proportional to 102,562.20, 153,843.30 and 28,690.20 is: 43,035.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,562.20 : 153,843.30 = 28,690.20 : x
  2. Step 2: Convert to fraction form
    102,562.20/153,843.30 = 28,690.20/x
  3. Step 3: Cross multiply
    102,562.20x = 153,843.30 × 28,690.20
  4. Step 4: Simplify right side
    102,562.20x = 4,413,795,045.66
  5. Step 5: Solve for x
    x = 4,413,795,045.66/102,562.20
  6. Step 6: Final answer
    x = 43,035.30

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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.