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Finding the Fourth Proportional to 100,335.59, 138,469.34 and 55,623.59

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Solution

The fourth proportional to 100,335.59, 138,469.34 and 55,623.59 is: 76,764.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,335.59 : 138,469.34 = 55,623.59 : x
  2. Step 2: Convert to fraction form
    100,335.59/138,469.34 = 55,623.59/x
  3. Step 3: Cross multiply
    100,335.59x = 138,469.34 × 55,623.59
  4. Step 4: Simplify right side
    100,335.59x = 7,702,161,517.61
  5. Step 5: Solve for x
    x = 7,702,161,517.61/100,335.59
  6. Step 6: Final answer
    x = 76,764.00

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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.