Home / 202,031.11-278,835.83-121,540.02

Finding the Fourth Proportional to 202,031.11, 278,835.83 and 121,540.02

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Solution

The fourth proportional to 202,031.11, 278,835.83 and 121,540.02 is: 167,745.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,031.11 : 278,835.83 = 121,540.02 : x
  2. Step 2: Convert to fraction form
    202,031.11/278,835.83 = 121,540.02/x
  3. Step 3: Cross multiply
    202,031.11x = 278,835.83 × 121,540.02
  4. Step 4: Simplify right side
    202,031.11x = 33,889,712,354.92
  5. Step 5: Solve for x
    x = 33,889,712,354.92/202,031.11
  6. Step 6: Final answer
    x = 167,745.02

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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.