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Finding the Fourth Proportional to 171,777.67, 257,663.46 and 70,553.80

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Solution

The fourth proportional to 171,777.67, 257,663.46 and 70,553.80 is: 105,829.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,777.67 : 257,663.46 = 70,553.80 : x
  2. Step 2: Convert to fraction form
    171,777.67/257,663.46 = 70,553.80/x
  3. Step 3: Cross multiply
    171,777.67x = 257,663.46 × 70,553.80
  4. Step 4: Simplify right side
    171,777.67x = 18,179,136,224.15
  5. Step 5: Solve for x
    x = 18,179,136,224.15/171,777.67
  6. Step 6: Final answer
    x = 105,829.45

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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.