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Finding the Fourth Proportional to 131,445, 197,183.84 and 51,472.64

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Solution

The fourth proportional to 131,445, 197,183.84 and 51,472.64 is: 77,215.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,445 : 197,183.84 = 51,472.64 : x
  2. Step 2: Convert to fraction form
    131,445/197,183.84 = 51,472.64/x
  3. Step 3: Cross multiply
    131,445x = 197,183.84 × 51,472.64
  4. Step 4: Simplify right side
    131,445x = 10,149,572,810.14
  5. Step 5: Solve for x
    x = 10,149,572,810.14/131,445
  6. Step 6: Final answer
    x = 77,215.36

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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.