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Finding the Fourth Proportional to 104,309.39, 143,947.03 and 56,562.73

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Solution

The fourth proportional to 104,309.39, 143,947.03 and 56,562.73 is: 78,056.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,309.39 : 143,947.03 = 56,562.73 : x
  2. Step 2: Convert to fraction form
    104,309.39/143,947.03 = 56,562.73/x
  3. Step 3: Cross multiply
    104,309.39x = 143,947.03 × 56,562.73
  4. Step 4: Simplify right side
    104,309.39x = 8,142,037,493.47
  5. Step 5: Solve for x
    x = 8,142,037,493.47/104,309.39
  6. Step 6: Final answer
    x = 78,056.61

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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.