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Finding the Fourth Proportional to 169,939.42, 254,892.62 and 51,611.80

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Solution

The fourth proportional to 169,939.42, 254,892.62 and 51,611.80 is: 77,412.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,939.42 : 254,892.62 = 51,611.80 : x
  2. Step 2: Convert to fraction form
    169,939.42/254,892.62 = 51,611.80/x
  3. Step 3: Cross multiply
    169,939.42x = 254,892.62 × 51,611.80
  4. Step 4: Simplify right side
    169,939.42x = 13,155,466,666.86
  5. Step 5: Solve for x
    x = 13,155,466,666.86/169,939.42
  6. Step 6: Final answer
    x = 77,412.68

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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.