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Finding the Fourth Proportional to 140,602.80, 210,922.70 and 51,918.60

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Solution

The fourth proportional to 140,602.80, 210,922.70 and 51,918.60 is: 77,884.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,602.80 : 210,922.70 = 51,918.60 : x
  2. Step 2: Convert to fraction form
    140,602.80/210,922.70 = 51,918.60/x
  3. Step 3: Cross multiply
    140,602.80x = 210,922.70 × 51,918.60
  4. Step 4: Simplify right side
    140,602.80x = 10,950,811,292.22
  5. Step 5: Solve for x
    x = 10,950,811,292.22/140,602.80
  6. Step 6: Final answer
    x = 77,884.73

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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.