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Finding the Fourth Proportional to 107,662.80, 148,480.08 and 75,380.88

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Solution

The fourth proportional to 107,662.80, 148,480.08 and 75,380.88 is: 103,959.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,662.80 : 148,480.08 = 75,380.88 : x
  2. Step 2: Convert to fraction form
    107,662.80/148,480.08 = 75,380.88/x
  3. Step 3: Cross multiply
    107,662.80x = 148,480.08 × 75,380.88
  4. Step 4: Simplify right side
    107,662.80x = 11,192,559,092.87
  5. Step 5: Solve for x
    x = 11,192,559,092.87/107,662.80
  6. Step 6: Final answer
    x = 103,959.39

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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.