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Finding the Fourth Proportional to 142,752.68, 196,992.90 and 79,093.16

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Solution

The fourth proportional to 142,752.68, 196,992.90 and 79,093.16 is: 109,145.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,752.68 : 196,992.90 = 79,093.16 : x
  2. Step 2: Convert to fraction form
    142,752.68/196,992.90 = 79,093.16/x
  3. Step 3: Cross multiply
    142,752.68x = 196,992.90 × 79,093.16
  4. Step 4: Simplify right side
    142,752.68x = 15,580,790,958.56
  5. Step 5: Solve for x
    x = 15,580,790,958.56/142,752.68
  6. Step 6: Final answer
    x = 109,145.35

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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.