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Finding the Fourth Proportional to 140,555.88, 210,916.98 and 51,871.14

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Solution

The fourth proportional to 140,555.88, 210,916.98 and 51,871.14 is: 77,837.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,555.88 : 210,916.98 = 51,871.14 : x
  2. Step 2: Convert to fraction form
    140,555.88/210,916.98 = 51,871.14/x
  3. Step 3: Cross multiply
    140,555.88x = 210,916.98 × 51,871.14
  4. Step 4: Simplify right side
    140,555.88x = 10,940,504,197.96
  5. Step 5: Solve for x
    x = 10,940,504,197.96/140,555.88
  6. Step 6: Final answer
    x = 77,837.40

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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.