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Finding the Fourth Proportional to 251,940.77, 377,908.80 and 102,145.45

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Solution

The fourth proportional to 251,940.77, 377,908.80 and 102,145.45 is: 153,217.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,940.77 : 377,908.80 = 102,145.45 : x
  2. Step 2: Convert to fraction form
    251,940.77/377,908.80 = 102,145.45/x
  3. Step 3: Cross multiply
    251,940.77x = 377,908.80 × 102,145.45
  4. Step 4: Simplify right side
    251,940.77x = 38,601,664,434.96
  5. Step 5: Solve for x
    x = 38,601,664,434.96/251,940.77
  6. Step 6: Final answer
    x = 153,217.22

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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.