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Finding the Fourth Proportional to 119,739, 179,609.40 and 53,161.26

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Solution

The fourth proportional to 119,739, 179,609.40 and 53,161.26 is: 79,742.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,739 : 179,609.40 = 53,161.26 : x
  2. Step 2: Convert to fraction form
    119,739/179,609.40 = 53,161.26/x
  3. Step 3: Cross multiply
    119,739x = 179,609.40 × 53,161.26
  4. Step 4: Simplify right side
    119,739x = 9,548,262,011.84
  5. Step 5: Solve for x
    x = 9,548,262,011.84/119,739
  6. Step 6: Final answer
    x = 79,742.29

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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.