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Finding the Fourth Proportional to 440,643.75, 660,964.01 and 125,100.69

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Solution

The fourth proportional to 440,643.75, 660,964.01 and 125,100.69 is: 187,650.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,643.75 : 660,964.01 = 125,100.69 : x
  2. Step 2: Convert to fraction form
    440,643.75/660,964.01 = 125,100.69/x
  3. Step 3: Cross multiply
    440,643.75x = 660,964.01 × 125,100.69
  4. Step 4: Simplify right side
    440,643.75x = 82,687,053,090.66
  5. Step 5: Solve for x
    x = 82,687,053,090.66/440,643.75
  6. Step 6: Final answer
    x = 187,650.58

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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.