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Finding the Fourth Proportional to 104,149.76, 143,571.84 and 81,754.88

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Solution

The fourth proportional to 104,149.76, 143,571.84 and 81,754.88 is: 112,700.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,149.76 : 143,571.84 = 81,754.88 : x
  2. Step 2: Convert to fraction form
    104,149.76/143,571.84 = 81,754.88/x
  3. Step 3: Cross multiply
    104,149.76x = 143,571.84 × 81,754.88
  4. Step 4: Simplify right side
    104,149.76x = 11,737,698,550.58
  5. Step 5: Solve for x
    x = 11,737,698,550.58/104,149.76
  6. Step 6: Final answer
    x = 112,700.20

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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.