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Finding the Fourth Proportional to 136,936.60, 205,404.90 and 48,189.40

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Solution

The fourth proportional to 136,936.60, 205,404.90 and 48,189.40 is: 72,284.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,936.60 : 205,404.90 = 48,189.40 : x
  2. Step 2: Convert to fraction form
    136,936.60/205,404.90 = 48,189.40/x
  3. Step 3: Cross multiply
    136,936.60x = 205,404.90 × 48,189.40
  4. Step 4: Simplify right side
    136,936.60x = 9,898,338,888.06
  5. Step 5: Solve for x
    x = 9,898,338,888.06/136,936.60
  6. Step 6: Final answer
    x = 72,284.10

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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.