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Finding the Fourth Proportional to 136,808.62, 205,204.73 and 42,039.70

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Solution

The fourth proportional to 136,808.62, 205,204.73 and 42,039.70 is: 63,057.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,808.62 : 205,204.73 = 42,039.70 : x
  2. Step 2: Convert to fraction form
    136,808.62/205,204.73 = 42,039.70/x
  3. Step 3: Cross multiply
    136,808.62x = 205,204.73 × 42,039.70
  4. Step 4: Simplify right side
    136,808.62x = 8,626,744,564.57
  5. Step 5: Solve for x
    x = 8,626,744,564.57/136,808.62
  6. Step 6: Final answer
    x = 63,057.03

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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.