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Finding the Fourth Proportional to 128,500.66, 192,727.77 and 34,984.54

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Solution

The fourth proportional to 128,500.66, 192,727.77 and 34,984.54 is: 52,470.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,500.66 : 192,727.77 = 34,984.54 : x
  2. Step 2: Convert to fraction form
    128,500.66/192,727.77 = 34,984.54/x
  3. Step 3: Cross multiply
    128,500.66x = 192,727.77 × 34,984.54
  4. Step 4: Simplify right side
    128,500.66x = 6,742,492,378.68
  5. Step 5: Solve for x
    x = 6,742,492,378.68/128,500.66
  6. Step 6: Final answer
    x = 52,470.49

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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.