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Finding the Fourth Proportional to 129,220.60, 193,686.90 and 50,308.60

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Solution

The fourth proportional to 129,220.60, 193,686.90 and 50,308.60 is: 75,406.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,220.60 : 193,686.90 = 50,308.60 : x
  2. Step 2: Convert to fraction form
    129,220.60/193,686.90 = 50,308.60/x
  3. Step 3: Cross multiply
    129,220.60x = 193,686.90 × 50,308.60
  4. Step 4: Simplify right side
    129,220.60x = 9,744,116,777.34
  5. Step 5: Solve for x
    x = 9,744,116,777.34/129,220.60
  6. Step 6: Final answer
    x = 75,406.84

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1.5x scale

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.