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Finding the Fourth Proportional to 128,500.79, 192,727.96 and 34,984.67

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Solution

The fourth proportional to 128,500.79, 192,727.96 and 34,984.67 is: 52,470.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,500.79 : 192,727.96 = 34,984.67 : x
  2. Step 2: Convert to fraction form
    128,500.79/192,727.96 = 34,984.67/x
  3. Step 3: Cross multiply
    128,500.79x = 192,727.96 × 34,984.67
  4. Step 4: Simplify right side
    128,500.79x = 6,742,523,029.27
  5. Step 5: Solve for x
    x = 6,742,523,029.27/128,500.79
  6. Step 6: Final answer
    x = 52,470.68

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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.