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Finding the Fourth Proportional to 136,933.60, 205,400.40 and 48,186.40

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Solution

The fourth proportional to 136,933.60, 205,400.40 and 48,186.40 is: 72,279.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,933.60 : 205,400.40 = 48,186.40 : x
  2. Step 2: Convert to fraction form
    136,933.60/205,400.40 = 48,186.40/x
  3. Step 3: Cross multiply
    136,933.60x = 205,400.40 × 48,186.40
  4. Step 4: Simplify right side
    136,933.60x = 9,897,505,834.56
  5. Step 5: Solve for x
    x = 9,897,505,834.56/136,933.60
  6. Step 6: Final answer
    x = 72,279.60

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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.