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Finding the Fourth Proportional to 169,172.88, 253,762.35 and 79,165.68

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Solution

The fourth proportional to 169,172.88, 253,762.35 and 79,165.68 is: 118,749.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,172.88 : 253,762.35 = 79,165.68 : x
  2. Step 2: Convert to fraction form
    169,172.88/253,762.35 = 79,165.68/x
  3. Step 3: Cross multiply
    169,172.88x = 253,762.35 × 79,165.68
  4. Step 4: Simplify right side
    169,172.88x = 20,089,268,996.15
  5. Step 5: Solve for x
    x = 20,089,268,996.15/169,172.88
  6. Step 6: Final answer
    x = 118,749.94

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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.