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Finding the Fourth Proportional to 171,726.30, 257,737.68 and 119,172.68

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Solution

The fourth proportional to 171,726.30, 257,737.68 and 119,172.68 is: 178,861.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,726.30 : 257,737.68 = 119,172.68 : x
  2. Step 2: Convert to fraction form
    171,726.30/257,737.68 = 119,172.68/x
  3. Step 3: Cross multiply
    171,726.30x = 257,737.68 × 119,172.68
  4. Step 4: Simplify right side
    171,726.30x = 30,715,290,062.58
  5. Step 5: Solve for x
    x = 30,715,290,062.58/171,726.30
  6. Step 6: Final answer
    x = 178,861.89

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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.