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Finding the Fourth Proportional to 100,133.62, 138,191.06 and 57,694.88

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Solution

The fourth proportional to 100,133.62, 138,191.06 and 57,694.88 is: 79,622.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,133.62 : 138,191.06 = 57,694.88 : x
  2. Step 2: Convert to fraction form
    100,133.62/138,191.06 = 57,694.88/x
  3. Step 3: Cross multiply
    100,133.62x = 138,191.06 × 57,694.88
  4. Step 4: Simplify right side
    100,133.62x = 7,972,917,113.49
  5. Step 5: Solve for x
    x = 7,972,917,113.49/100,133.62
  6. Step 6: Final answer
    x = 79,622.78

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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.