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Finding the Fourth Proportional to 140,449.51, 210,757.47 and 51,765.31

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Solution

The fourth proportional to 140,449.51, 210,757.47 and 51,765.31 is: 77,678.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,449.51 : 210,757.47 = 51,765.31 : x
  2. Step 2: Convert to fraction form
    140,449.51/210,757.47 = 51,765.31/x
  3. Step 3: Cross multiply
    140,449.51x = 210,757.47 × 51,765.31
  4. Step 4: Simplify right side
    140,449.51x = 10,909,925,769.37
  5. Step 5: Solve for x
    x = 10,909,925,769.37/140,449.51
  6. Step 6: Final answer
    x = 77,678.63

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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.