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Finding the Fourth Proportional to 128,008.80, 192,035.49 and 43,777.39

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Solution

The fourth proportional to 128,008.80, 192,035.49 and 43,777.39 is: 65,673.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,008.80 : 192,035.49 = 43,777.39 : x
  2. Step 2: Convert to fraction form
    128,008.80/192,035.49 = 43,777.39/x
  3. Step 3: Cross multiply
    128,008.80x = 192,035.49 × 43,777.39
  4. Step 4: Simplify right side
    128,008.80x = 8,406,812,539.57
  5. Step 5: Solve for x
    x = 8,406,812,539.57/128,008.80
  6. Step 6: Final answer
    x = 65,673.71

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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.