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Finding the Fourth Proportional to 139,670.04, 192,749.03 and 79,243.23

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Solution

The fourth proportional to 139,670.04, 192,749.03 and 79,243.23 is: 109,358.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,670.04 : 192,749.03 = 79,243.23 : x
  2. Step 2: Convert to fraction form
    139,670.04/192,749.03 = 79,243.23/x
  3. Step 3: Cross multiply
    139,670.04x = 192,749.03 × 79,243.23
  4. Step 4: Simplify right side
    139,670.04x = 15,274,055,320.35
  5. Step 5: Solve for x
    x = 15,274,055,320.35/139,670.04
  6. Step 6: Final answer
    x = 109,358.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.