Home / 121,749.22-182,676.63-42,919.78

Finding the Fourth Proportional to 121,749.22, 182,676.63 and 42,919.78

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Solution

The fourth proportional to 121,749.22, 182,676.63 and 42,919.78 is: 64,398.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,749.22 : 182,676.63 = 42,919.78 : x
  2. Step 2: Convert to fraction form
    121,749.22/182,676.63 = 42,919.78/x
  3. Step 3: Cross multiply
    121,749.22x = 182,676.63 × 42,919.78
  4. Step 4: Simplify right side
    121,749.22x = 7,840,440,770.74
  5. Step 5: Solve for x
    x = 7,840,440,770.74/121,749.22
  6. Step 6: Final answer
    x = 64,398.28

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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.