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Finding the Fourth Proportional to 128,536.60, 192,804.90 and 128,536.60

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Solution

The fourth proportional to 128,536.60, 192,804.90 and 128,536.60 is: 192,804.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,536.60 : 192,804.90 = 128,536.60 : x
  2. Step 2: Convert to fraction form
    128,536.60/192,804.90 = 128,536.60/x
  3. Step 3: Cross multiply
    128,536.60x = 192,804.90 × 128,536.60
  4. Step 4: Simplify right side
    128,536.60x = 24,782,486,309.34
  5. Step 5: Solve for x
    x = 24,782,486,309.34/128,536.60
  6. Step 6: Final answer
    x = 192,804.90

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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.