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Finding the Fourth Proportional to 104,143, 143,786.46 and 64,468.12

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Solution

The fourth proportional to 104,143, 143,786.46 and 64,468.12 is: 89,008.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,143 : 143,786.46 = 64,468.12 : x
  2. Step 2: Convert to fraction form
    104,143/143,786.46 = 64,468.12/x
  3. Step 3: Cross multiply
    104,143x = 143,786.46 × 64,468.12
  4. Step 4: Simplify right side
    104,143x = 9,269,642,757.66
  5. Step 5: Solve for x
    x = 9,269,642,757.66/104,143
  6. Step 6: Final answer
    x = 89,008.79

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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.