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Finding the Fourth Proportional to 171,942.40, 257,694.90 and 153,134.20

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Solution

The fourth proportional to 171,942.40, 257,694.90 and 153,134.20 is: 229,506.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,942.40 : 257,694.90 = 153,134.20 : x
  2. Step 2: Convert to fraction form
    171,942.40/257,694.90 = 153,134.20/x
  3. Step 3: Cross multiply
    171,942.40x = 257,694.90 × 153,134.20
  4. Step 4: Simplify right side
    171,942.40x = 39,461,902,355.58
  5. Step 5: Solve for x
    x = 39,461,902,355.58/171,942.40
  6. Step 6: Final answer
    x = 229,506.52

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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.