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Finding the Fourth Proportional to 100,793.34, 139,103.46 and 55,480.32

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Solution

The fourth proportional to 100,793.34, 139,103.46 and 55,480.32 is: 76,567.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,793.34 : 139,103.46 = 55,480.32 : x
  2. Step 2: Convert to fraction form
    100,793.34/139,103.46 = 55,480.32/x
  3. Step 3: Cross multiply
    100,793.34x = 139,103.46 × 55,480.32
  4. Step 4: Simplify right side
    100,793.34x = 7,717,504,473.91
  5. Step 5: Solve for x
    x = 7,717,504,473.91/100,793.34
  6. Step 6: Final answer
    x = 76,567.60

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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.