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Finding the Fourth Proportional to 192,154.11, 288,668.57 and 139,010.01

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Solution

The fourth proportional to 192,154.11, 288,668.57 and 139,010.01 is: 208,831.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,154.11 : 288,668.57 = 139,010.01 : x
  2. Step 2: Convert to fraction form
    192,154.11/288,668.57 = 139,010.01/x
  3. Step 3: Cross multiply
    192,154.11x = 288,668.57 × 139,010.01
  4. Step 4: Simplify right side
    192,154.11x = 40,127,820,107.34
  5. Step 5: Solve for x
    x = 40,127,820,107.34/192,154.11
  6. Step 6: Final answer
    x = 208,831.44

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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.