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Finding the Fourth Proportional to 157,218.60, 235,611.90 and 100,885.80

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Solution

The fourth proportional to 157,218.60, 235,611.90 and 100,885.80 is: 151,190.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,218.60 : 235,611.90 = 100,885.80 : x
  2. Step 2: Convert to fraction form
    157,218.60/235,611.90 = 100,885.80/x
  3. Step 3: Cross multiply
    157,218.60x = 235,611.90 × 100,885.80
  4. Step 4: Simplify right side
    157,218.60x = 23,769,895,021.02
  5. Step 5: Solve for x
    x = 23,769,895,021.02/157,218.60
  6. Step 6: Final answer
    x = 151,190.09

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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.