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Finding the Fourth Proportional to 140,508.72, 210,846.24 and 51,824.64

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Solution

The fourth proportional to 140,508.72, 210,846.24 and 51,824.64 is: 77,767.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,508.72 : 210,846.24 = 51,824.64 : x
  2. Step 2: Convert to fraction form
    140,508.72/210,846.24 = 51,824.64/x
  3. Step 3: Cross multiply
    140,508.72x = 210,846.24 × 51,824.64
  4. Step 4: Simplify right side
    140,508.72x = 10,927,030,483.35
  5. Step 5: Solve for x
    x = 10,927,030,483.35/140,508.72
  6. Step 6: Final answer
    x = 77,767.63

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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.