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Finding the Fourth Proportional to 253,172.99, 379,946.39 and 120,053.69

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Solution

The fourth proportional to 253,172.99, 379,946.39 and 120,053.69 is: 180,169.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,172.99 : 379,946.39 = 120,053.69 : x
  2. Step 2: Convert to fraction form
    253,172.99/379,946.39 = 120,053.69/x
  3. Step 3: Cross multiply
    253,172.99x = 379,946.39 × 120,053.69
  4. Step 4: Simplify right side
    253,172.99x = 45,613,964,871.68
  5. Step 5: Solve for x
    x = 45,613,964,871.68/253,172.99
  6. Step 6: Final answer
    x = 180,169.16

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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.