Home / 144,031.20-198,798.68-87,489.96

Finding the Fourth Proportional to 144,031.20, 198,798.68 and 87,489.96

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Solution

The fourth proportional to 144,031.20, 198,798.68 and 87,489.96 is: 120,757.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,031.20 : 198,798.68 = 87,489.96 : x
  2. Step 2: Convert to fraction form
    144,031.20/198,798.68 = 87,489.96/x
  3. Step 3: Cross multiply
    144,031.20x = 198,798.68 × 87,489.96
  4. Step 4: Simplify right side
    144,031.20x = 17,392,888,561.25
  5. Step 5: Solve for x
    x = 17,392,888,561.25/144,031.20
  6. Step 6: Final answer
    x = 120,757.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.