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Finding the Fourth Proportional to 104,562.80, 156,633.60 and 72,864.80

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Solution

The fourth proportional to 104,562.80, 156,633.60 and 72,864.80 is: 109,150.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,562.80 : 156,633.60 = 72,864.80 : x
  2. Step 2: Convert to fraction form
    104,562.80/156,633.60 = 72,864.80/x
  3. Step 3: Cross multiply
    104,562.80x = 156,633.60 × 72,864.80
  4. Step 4: Simplify right side
    104,562.80x = 11,413,075,937.28
  5. Step 5: Solve for x
    x = 11,413,075,937.28/104,562.80
  6. Step 6: Final answer
    x = 109,150.44

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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.