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Finding the Fourth Proportional to 169,215.42, 253,767.76 and 79,230.28

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Solution

The fourth proportional to 169,215.42, 253,767.76 and 79,230.28 is: 118,819.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,215.42 : 253,767.76 = 79,230.28 : x
  2. Step 2: Convert to fraction form
    169,215.42/253,767.76 = 79,230.28/x
  3. Step 3: Cross multiply
    169,215.42x = 253,767.76 × 79,230.28
  4. Step 4: Simplify right side
    169,215.42x = 20,106,089,832.21
  5. Step 5: Solve for x
    x = 20,106,089,832.21/169,215.42
  6. Step 6: Final answer
    x = 118,819.49

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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.