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Finding the Fourth Proportional to 128,536.67, 192,802.95 and 35,042.42

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Solution

The fourth proportional to 128,536.67, 192,802.95 and 35,042.42 is: 52,563.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,536.67 : 192,802.95 = 35,042.42 : x
  2. Step 2: Convert to fraction form
    128,536.67/192,802.95 = 35,042.42/x
  3. Step 3: Cross multiply
    128,536.67x = 192,802.95 × 35,042.42
  4. Step 4: Simplify right side
    128,536.67x = 6,756,282,433.15
  5. Step 5: Solve for x
    x = 6,756,282,433.15/128,536.67
  6. Step 6: Final answer
    x = 52,563.07

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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.